5 Werkstofftechnik
Filtern
Dokumenttyp
- Vortrag (460)
- Posterpräsentation (116)
- Beitrag zu einem Tagungsband (71)
- Zeitschriftenartikel (66)
- Forschungsdatensatz (27)
- Buchkapitel (11)
- Dissertation (10)
- Forschungsbericht (7)
- Sonstiges (5)
- Sammelband (Herausgeberschaft für den kompletten Band) (3)
Sprache
- Englisch (616)
- Deutsch (159)
- Mehrsprachig (4)
- Französisch (2)
Referierte Publikation
- nein (781) (entfernen)
Schlagworte
- Additive Manufacturing (54)
- Corrosion (45)
- Additive manufacturing (40)
- Ontology (35)
- Glass (31)
- Microstructure (31)
- Creep (24)
- Fatigue (23)
- Transmission electron microscopy (18)
- Crack growth (16)
- LCF (16)
- CCS (15)
- Ontologie (15)
- 316L (14)
- Additive Fertigung (14)
- Ceramics (14)
- Degradation (14)
- Ceramic (12)
- EBSD (12)
- Sintering (12)
- Aluminium (11)
- Alloy 2618A (10)
- Coarsening (10)
- Fraktographie (10)
- Glas (10)
- Low Cycle Fatigue (10)
- Machine Learning (10)
- Particle size (10)
- Ti-6Al-4V (10)
- CCUS (9)
- CO2 (9)
- Crystallization (9)
- FAIR (9)
- Mikrostruktur (9)
- Nanoparticles (9)
- Oxidation (9)
- Simulation (9)
- Slurry (9)
- Steel (9)
- VSSA (9)
- Crystal plasticity (8)
- DCB (8)
- Diffraction (8)
- Digitalisierung (8)
- Digitalization (8)
- EN AW-2618A (8)
- Fractography (8)
- Glass fiber reinforced polymers (8)
- High entropy alloys (8)
- Kriechen (8)
- Martensitic steel (8)
- Thermoelectrics (8)
- Aluminium alloy (7)
- Anisotropy (7)
- Mechanical testing (7)
- Plattform MaterialDigital (7)
- Powder (7)
- S-phase (7)
- Scanning electron microscopy (7)
- Semantic Web Technologies (7)
- Vickers (7)
- Water speciation (7)
- Zugversuch (7)
- AGIL (6)
- AISI 316L (6)
- CALPHAD (6)
- Composite (6)
- Electron microscopy (6)
- Geothermal (6)
- High temperature corrosion (6)
- High-temperature corrosion (6)
- In situ (6)
- Nano powder (6)
- Nickel-base superalloys (6)
- Robotic melting (6)
- Schädigung (6)
- Semantic Interoperability (6)
- Soda-lime silicate glass (6)
- Sulfidation (6)
- Supercritical/dense phase CO2 (6)
- TMF (6)
- Thermomechanical fatigue (6)
- Wind turbine blades (6)
- 3D printing (5)
- Aging (5)
- Alterung (5)
- Betriebsfestigkeit (5)
- CCU (5)
- CO2 quality (5)
- Carbon steel (5)
- Carbon steels (5)
- Damage (5)
- Dark-field transmission electron microscopy (DFTEM) (5)
- Data Interoperability (5)
- Droplet corrosion (5)
- FAIR data (5)
- FAIR data management (5)
- Fe-Al alloys (5)
- Full Notch Creep Test (5)
- Heat treatment (5)
- Hydrogen (5)
- Impurities (5)
- Intermetallics (5)
- Iron aluminides (5)
- Keramik (5)
- Knowledge Representation (5)
- Knowledge graph and ontologies (5)
- Layerwise slurry deposition (5)
- Lebensdauer (5)
- Mechanical properties (5)
- Microgravity (5)
- Mikroplastik (5)
- Neutron diffraction (5)
- Non-destructive testing (5)
- Normung (5)
- PMD Core Ontology (5)
- Polymer matrix composites (5)
- Residual Stress (5)
- Residual stress (5)
- Sandwich (5)
- Schadensanalyse (5)
- Superaustenite steel (5)
- TEM (5)
- Tensile Test (5)
- Water content (5)
- Wissensrepräsentation (5)
- Workflow (5)
- X-ray diffraction (5)
- Alkali ions (4)
- Alkali zinc borate glasses (4)
- Alumina (4)
- Bildanalyse (4)
- Carbon capture (4)
- Composites (4)
- Computed Tomography (4)
- Creep behavior (4)
- Data Fusion (4)
- Data Space (4)
- Data mapping (4)
- Diesel (4)
- Environmental stress cracking (4)
- Ermüdung (4)
- Fatigue crack growth (4)
- Foaming (4)
- Fracture surface (4)
- Full-Notch Creep Test (FNCT) (4)
- Gassensorik (4)
- High Cycle Fatigue (4)
- High alloyed steel (4)
- High entropy alloy (4)
- High temperature (4)
- In-space manufacturing (4)
- Inconel 686 (4)
- LTCC (4)
- Laser Powder Bed Fusion (4)
- Laser powder bed fusion (4)
- NTE (4)
- Nano (4)
- Ni-Resist (4)
- Oxidglas (4)
- P92 (4)
- PE-HD (4)
- Pipeline (4)
- Pipeline network (4)
- Plattform Material Digital (4)
- Polyaniline (4)
- Polymer (4)
- Reference data (4)
- SEM (4)
- Scale-bridging (4)
- Scarf repairs (4)
- Selective laser melting (4)
- Shear modulus (4)
- Spectroscopy (4)
- Surface (4)
- TED-GC-MS (4)
- Tensile test (4)
- Tensile testing (4)
- Thermomechanics (4)
- Virtual experiments (4)
- Viscosity (4)
- Young's modulus (4)
- Zerstörungsfreie Prüfung (4)
- 3D (3)
- Ab-initio (3)
- Advanced ceramics (3)
- Aluminium Alloy (3)
- Binder Jetting (3)
- Brinell hardness (3)
- CFK (3)
- CLS (3)
- Carbon capture storage (3)
- Carbon dioxide (3)
- Ceramic spring (3)
- Chemically complex alloy (3)
- Coating (3)
- Concrete (3)
- Corrosion Fatigue (3)
- Crack (3)
- Crack Propagation (3)
- Crack tip opening displacement (3)
- Creep data (3)
- Creep-fatigue (3)
- Dark-field transmission electron microscopy (3)
- Dielectric strength (3)
- Diffusion (3)
- Digitaler Zwilling (3)
- Digtial Representation (3)
- Diopside (3)
- Elastic modulus (3)
- Electron Backscatter Diffraction (3)
- Electronic Lab Notebook (3)
- Environmental Stress Cracking (3)
- FIB (3)
- Ferritic-martensitic steels (3)
- Fracture Toughness (3)
- GD-OES (3)
- Gold nanoparticles (3)
- H2Safety@BAM (3)
- Hardness (3)
- High temperature mechanical properties (3)
- High-density polyethylene (3)
- High-entropy alloys (3)
- Infrarotspektroskopie (3)
- Interoperability (3)
- Inverted classroom (3)
- Iron oxide nanoparticles (3)
- Knowledge graph (3)
- Korrosion (3)
- Layerwise Slurry Deposition (3)
- Lightweight materials (3)
- Lithium Ion Batteries (3)
- Luftultraschall (3)
- ML (3)
- Mechanical behavior (3)
- Mechanische Eigenschaften (3)
- Metadata schema (3)
- Microplastics (3)
- Microstructure Design (3)
- Modeling (3)
- Nano-powder (3)
- Orientation (3)
- Oxide Glasses (3)
- PMD (3)
- PMDco (3)
- Pitting (3)
- Pulveraktivkohle (3)
- REM (3)
- Recommendations (3)
- Referenzdaten (3)
- Research Data Management (3)
- Rotor blade (3)
- Roughness (3)
- Röntgenrefraktion (3)
- Sample preparation (3)
- Scintillators (3)
- Semantic Data (3)
- Semantic Web (3)
- SiO2 (3)
- Silicate Glasses (3)
- Sol-gel (3)
- Solid-state (3)
- Stress relaxation (3)
- Superalloy (3)
- Superlegierung (3)
- Surface energy (3)
- Syngle Crystal alloy (3)
- TDEP (3)
- Temperature (3)
- Tempered Martensite Ferritic Steels (3)
- Tensile Test Ontology (3)
- Tensile data (3)
- Texture (3)
- Thermo-Mechanical Fatigue (3)
- Thermogravimetrie (3)
- Transmission electron microscopy (TEM) (3)
- Ultrasound (3)
- Utilization (3)
- Wasser (3)
- Welding (3)
- Whole-chain CCS scenario (3)
- Wind energy (3)
- Wind turbine blade shells (3)
- Windenergie (3)
- XRD (3)
- μ-gravity (3)
- 3D Druck (2)
- 3D-printing (2)
- AM (2)
- Additiv gefertigter Stahl (2)
- Adiabatic calorimeter (2)
- Agglomerates (2)
- Aggressive environment (2)
- Air-coupled ultrasonic testing (2)
- Airborne ultrasonic testing (2)
- Al-Cu-Li alloys (2)
- Aluminum (2)
- Aluminum alloys (2)
- Analysis (2)
- Analytische Zentrifuge (2)
- Annealing (2)
- Aquifer (2)
- Automation (2)
- Belebtschlamm (2)
- Biodiesel (2)
- Biofilm (2)
- Bond energy (2)
- CO2-storage (2)
- CT (2)
- Calcium cobaltite (2)
- Calciumcobaltit (2)
- Calciummanganat (2)
- Capture (2)
- Carbon (2)
- Carbon Fiber Reinforced Plastics (2)
- Carbon storage (2)
- Casting (2)
- CeO2 (2)
- Cement (2)
- Ceramic multilayer (2)
- Ceria (2)
- Characterization (2)
- Chromium oxide (2)
- Coatings (2)
- Compositionally complex alloys (2)
- Condensation (2)
- Copper (2)
- Copper alloys (2)
- Corrosion fatigue (2)
- Crack evolution (2)
- Crack propagation (2)
- Crack propagation analysis (2)
- Creep-Fatigue (2)
- Crevice corrosion (2)
- Cross linking (2)
- Crystal orientation (2)
- Cure process (2)
- DLS (2)
- Data Management (2)
- Data Structures (2)
- Data management (2)
- Dataset (2)
- Datenbank (2)
- Dehnungsfehler (2)
- Density (2)
- Depth-profiling (2)
- Destabilization (2)
- Deuterium (2)
- Dielectric breakdown (2)
- Diffraction Elastic Constants (2)
- Diffraction Enhanced Imaging (2)
- Diffusion coefficient (2)
- Digital image correlation (2)
- Digital material representation (2)
- Digital representation (2)
- Digitization (2)
- Dislocation (2)
- Dislocations (2)
- Dispersion process (2)
- Distribution function (2)
- Dynamic mechanical analysis (DMA) (2)
- EDX (2)
- EDXRD (2)
- Electron beam induced modification (2)
- Electron-beam-induced modification (2)
- Environmental Stress Cracking (ESC) (2)
- Environmental stress cracking (ESC) (2)
- Erneuerbare Energien (2)
- Extensometer (2)
- Fahrrad (2)
- Faser-Kunststoff-Verbunde (2)
- Faserkunststoffverbunde (2)
- Faseroptische Sensorik (2)
- Fatigue of sandwich shell structures (2)
- FeCr- alloys (2)
- Ferroelectret (2)
- Ferroelektret (2)
- Fiber reinforced polymer (2)
- Fluoride phosphate glasses (2)
- Fracture Surface Analysis (2)
- Fracture surface analysis (2)
- Fraktografie (2)
- GFK (2)
- Geführte Ultraschallwellen (2)
- Gender gap (2)
- Gitterkonstanten (2)
- Glass Digital (2)
- Glass composition (2)
- Glass powder (2)
- Glass-ceramics (2)
- Grain boundary engineering (2)
- HIP (2)
- Hard machining (2)
- Heat Treatment (2)
- High Alloyed Steel (2)
- High Entropy Alloy (2)
- High Temperature Corrosion (2)
- High Temperature Testing (2)
- High-entropy alloy (2)
- Hochentropie-Legierung (2)
- Hochtemperatur (2)
- Hydrogen permeation (2)
- IN 718 (2)
- IN718 (2)
- IR (2)
- ISRU (2)
- Imaging techniques (2)
- In situ tensile test (2)
- In-situ (2)
- Infrastructure (2)
- Injection (2)
- Interface (2)
- Internal friction (2)
- Joined nickel-based alloys (2)
- Kavitation (2)
- Keramikfeder (2)
- Kikuchi (2)
- Kleinprobenprüfung (2)
- Kontrastierung (2)
- L-PBF (2)
- LSD-print (2)
- Laminography (2)
- Laser (2)
- Laser Powder Bed fusion (2)
- Laser ablation in liquid (2)
- Laser beam melting (2)
- Laser cladding (2)
- Lattice misfit (2)
- Lattice parameters (2)
- Layerwise (2)
- Lead borate glasses (2)
- Leckdetektion (2)
- Long-term behavior (2)
- Low cycle fatigue (2)
- Lunar habitat (2)
- Lunar regolith simulant (2)
- Manganese oxide (2)
- Manufacturing (2)
- Material Digital (2)
- Material digital (2)
- Metal seal (2)
- Metrologie zur Wasserstoffspeicherung (2)
- Micromechanical model (2)
- Microstrucrue Design (2)
- Microstructural analysis (2)
- Microstructural characterization (2)
- Microstructure analysis (2)
- Microstructure evolution (2)
- Microstructure-property-correlation (2)
- Mikrostrukturentwicklung (2)
- Mixed gas atmosphere (2)
- Monte-Carlo Simulation (2)
- Multifunctional nanoparticles (2)
- Multilayer (2)
- Multilayer technology (2)
- Multilayertechnik (2)
- NDT (2)
- NFDI (2)
- Nano particle (2)
- Nano screening (2)
- Nanomaterial (2)
- Nanopulver (2)
- Notches (2)
- OECD TG 124 (2)
- Ontologien (2)
- Ontology development (2)
- Oriented surface crystallization (2)
- Oxidation behavior (2)
- PBF-LB/M/316L (2)
- Partikelgrößenverteilung (2)
- Paving (2)
- Phase change material (2)
- Phase-field simulation (2)
- Phasenidentifikation (2)
- Photon counting detector (2)
- Pipelines (2)
- Plasticity (2)
- Polyethylen (2)
- Polyethylen hoher Dichte (2)
- Polyethylene, PE-HD (2)
- Polymer Matrix Composites (2)
- Porosity (2)
- Precipitation (2)
- Probengrößeneffekt (2)
- Process monitoring (2)
- Protective coating (2)
- Präparation (2)
- Push-out Test (2)
- Ratio refinement (2)
- Reaction sintering (2)
- Reference material (2)
- Residual Stresses (2)
- Residual stresses (2)
- Ressidual stress (2)
- Rissentwicklung (2)
- Risswachstum (2)
- Roboter (2)
- Robotische Glasschmelzanlage (2)
- Robotische Schmelzanlage (2)
- Rotorblattschalen (2)
- Round robin (2)
- Röntgen-Refraktion (2)
- Röntgenbeugung (2)
- S355 steel sheet (2)
- SAXS (2)
- SIMS (2)
- SLM (2)
- Salt eutectics (2)
- Schadensprävention (2)
- Selective Laser Melting (2)
- Semantic Representation (2)
- Semantisches Web (2)
- SensRef (2)
- Sensorik (2)
- Sibayak (2)
- Silicon Carbide (2)
- Silver diffusion (2)
- Silver nanoparticle (2)
- Silver-glass-metallization-paste (2)
- Sinter additive (2)
- Sintering additives (2)
- Sintern (2)
- Size distribution (2)
- Sol-gel coating (2)
- Solar sintering (2)
- Solubility (2)
- Spannungs-Dehnungs-Verhalten (2)
- Spannungsriss (2)
- Spray drying (2)
- Spring constant (2)
- Standard (2)
- Standardisierung (2)
- Standardization (2)
- Starch (2)
- Starch nanoparticle (2)
- Storage (2)
- Structural Health Monitoring (SHM) (2)
- Struktur (2)
- Sulfiding (2)
- Supercritical CO2 (2)
- Surface Energy (2)
- Surface crystallization (2)
- Synchrotron Tomography (2)
- Synchrotronstrahlung (2)
- Synthetic air (2)
- Temperaturschwankungen (2)
- Tensile Properties (2)
- Thermal Spray (2)
- Thermal energy storage (2)
- Thermoanalyse (2)
- Thermoelectric (2)
- Thermographie (2)
- Thermogravimetry (2)
- Thermomechanik (2)
- Thermoset polymers (2)
- Ti64 (2)
- TiAl5V4 (2)
- Titan (2)
- Titanium (2)
- Titanium oxide (2)
- ToF-SIMS (2)
- Topografie (2)
- Topographie (2)
- Topography (2)
- Transmissionselektronenmikroskopie (2)
- Transparent ceramics (2)
- Tribologie (2)
- Two Photon Polymerization (2)
- UV-irradiation (2)
- Vickers hardness (2)
- Viscoplasticity (2)
- Wall thickness (2)
- Wandler (2)
- Water-based (2)
- Weibull Distribution (2)
- Werkstoffprüfung (2)
- Wind turbine (2)
- Wood protection (2)
- X-Ray Diffraction (2)
- X-ray laminography (2)
- X-ray refraction (2)
- XANES (2)
- Zero-g (2)
- Zugeigenschaften (2)
- corrosion (2)
- robotische Glasschmelzanlage (2)
- µ-gravity (2)
- Öffentliche Sicherheit (2)
- 150 Years (1)
- 2PP (1)
- 3D REM (1)
- 3D Reconstruction (1)
- 3D glass structure model (1)
- 3D imaging (1)
- 3D materialography (1)
- 5G (1)
- 9-12% Cr ferritic-martensitic steels (1)
- 9–12%Cr steel (1)
- AFM (1)
- AFM based test methods (1)
- AISI 304L (1)
- ATZ (1)
- Abgasturbolader Heißteile (1)
- Abwasser (1)
- Accelerated integration scheme (1)
- Acid-leaching (1)
- Acids (1)
- Active thermography (1)
- Additive manufactured Ni-base superalloys (1)
- Adiabatic shear bands (1)
- Adolf Martens (1)
- Advanced manufacturing (1)
- Advanced wastewater treatment (1)
- Aerospace (1)
- Age hardening (1)
- Ageing (1)
- Aggressive environement (1)
- Aggressive gases (1)
- Aging mechanisms (1)
- Al-Li alloys (1)
- Al2CuMg (1)
- Al2O3 (1)
- Alkali zinc borate glass (1)
- Alkali-activated materials (1)
- Allgemeine Grundlagen (1)
- Alloy 2818A (1)
- Alpha-tricalcium phosphate (1)
- Alumina toughened zirconia (1)
- Aluminiumlegierung (1)
- Aluminosilicate glasses (1)
- Aluminum alloy (1)
- Amorphous silica (1)
- Analyse (1)
- Analytical services (1)
- Analytik (1)
- Anhydrite (1)
- Anticorrosion (1)
- Anwendungen (1)
- Artefact (1)
- Atacama Desert (1)
- Atmospheric Plasma Spraying (1)
- Atmospheric plasma spraying (1)
- Atomic packing factor (1)
- Atomization (1)
- Aufbau von Festkörpern (1)
- Aussonderugnsrate (1)
- Austenitic cast iron (1)
- Austenitic stainless steel (1)
- Austenitic steel (1)
- Austenitic steel 316L (1)
- Austenitischer Stahl (1)
- Automatable digital approach (1)
- Automated finite element analysis (1)
- Automatische Finite Element Simulation (1)
- BCS (1)
- BET (1)
- BTS (1)
- Beanspruchung (1)
- Berstdruck (1)
- Biaxial strength (1)
- Bilanzierung (1)
- Binder jetting (1)
- Bio Ceramics (1)
- Bio-ceramic engineering (1)
- Bioactive (1)
- Bioactive Glass (1)
- Bioactive glass (1)
- Bioceramic (1)
- Bioceramics (1)
- Bioresorbable (1)
- Blended learning (1)
- Blähen (1)
- Boden (1)
- Borate glasses (1)
- Breakdown strength (1)
- Brittle / ductile fracture behavior (1)
- Brittle fracture (1)
- Brown-rot fungi (1)
- Bruch (1)
- Bruchflächen (1)
- Bruchflächenanalyse (1)
- Bruchflächenauswertung (1)
- Bundesoberbehörden (1)
- Burst test (1)
- CALPHAD databases analysis (1)
- CMSX4 (1)
- CO2 Corrosion (1)
- CO2-Speicherung (1)
- CO2-corrosion (1)
- Cabon capture and storage (1)
- Calcination (1)
- Calcium manganate (1)
- Calcium sulfates (1)
- Calibration (1)
- Cantor alloy (1)
- Carbidic austempered ductile iron (1)
- Carbon steels (1)
- Carbon Capture (1)
- Carbon Capture, Utilization and Storage (CCUS) (1)
- Carbon Fibers (1)
- Carbon capture and storage (1)
- Carbon fibre-reinforced-plastics (1)
- Catalogue of services (1)
- Ccs (1)
- CdTe quantum dots (1)
- Centrifugal casting (1)
- Centrifugal compressor wheel (1)
- Ceramic nano particles (1)
- Ceramic springs (1)
- Ceramics 3D printing (1)
- Certification Standard 22 (1)
- Certified Referencematerial (1)
- Cetrifugal Liquid Sedimentation CLS (1)
- Charpy test (1)
- Chemically Complex Alloy (1)
- Chemically complex alloys (1)
- Chemische Analyse (1)
- Chemo-mechanical coupling (1)
- Chemometrie (1)
- Chromatography (1)
- Chromia (1)
- Co-axial monitoring (1)
- Co-firing (1)
- Co-segregation (1)
- Co2-Storage (1)
- Complex borides (1)
- Complex concentrated alloy (CCA) (1)
- Complex loading (1)
- Component assessment (1)
- Composite materials (1)
- Composite pressure vessels (1)
- Composite structures (1)
- Composite testing (1)
- Computed tomography (1)
- Coniophora puteana (1)
- Contamination (1)
- Continnum damage model (1)
- Cooling simulations (1)
- Corrosion and storage (CCUS) technology (1)
- Corrosion mechanism (1)
- Corrosion resistance (1)
- Coulomb explosion (1)
- Covid-19 (1)
- Cow stress (1)
- Coûts de la corrosion (1)
- Cr2O3 (1)
- CrMnFeCoNi (1)
- Crack healing (1)
- Creep anisotropy (1)
- Creep behaviour (1)
- Creep, Creep Rupture, and Stress Rupture (1)
- Critical energy release rate (1)
- Crop protection formulations (1)
- Crystal Defects (1)
- Crystal Orientation (1)
- Crystal Plasticity Modelling (1)
- Crystal lattice (1)
- Cubical Iron Oxide (1)
- Cubical shape (1)
- Cycle jump (1)
- Cyclic R-Curve (1)
- Cyclic loading (1)
- Cyclic oxidation (1)
- Cyclic softening (1)
- DED-L (1)
- DIN (1)
- Damage Behavior (1)
- Damage Tolerance (1)
- Damage behavior (1)
- Damage evolution (1)
- Damage mechanisms (1)
- Data Exchange (1)
- Data Integration (1)
- Data Mapping (1)
- Data analysis (1)
- Data format (1)
- Data fusion (1)
- Data linking (1)
- Data pipeline (1)
- Data pipeline concept (1)
- Data space (1)
- Data storage (1)
- Data structure (1)
- Datenfusion (1)
- Datenmanagement (1)
- Datenökosystem (1)
- Debinding (1)
- Deep learning (1)
- Defect detection (1)
- Defects (1)
- Defects phase diagram (1)
- Defects thermodynamics (1)
- Deformation behavior (1)
- Demonstrators (1)
- Dense phase (1)
- Density-based Model (1)
- Density-based Thermodynamics (1)
- Density-based model (1)
- Density-based phase-field modelling (1)
- Dental (1)
- Dental ceramics (1)
- Dentine (1)
- Die casting (1)
- Dielectric Spectroscopy (1)
- Dielectric breakdown strength (1)
- Dielectric characterization (1)
- Dielectric properties (1)
- Diffraction contrast (1)
- Diffusivity (1)
- Digital Transformation (1)
- Digital Twin (1)
- Digital workflow (1)
- Dislocation substructure (1)
- Disordered assemblies (1)
- Dissimilar metal weld (1)
- Dissolved water (1)
- Distributed fiber optic sensors (1)
- Distributed fibre optic sensors (1)
- Diversity (1)
- Driving physical mechanism (1)
- Droplet (1)
- Druckgasspeicher (1)
- Dual-energy (1)
- Ductile iron (1)
- Durchschlagfestigkeit (1)
- Dwell-Fatigue (1)
- Dynamic mechanical analysis (1)
- Dynamisch Mechanische Analyse (1)
- EAC-1A (1)
- EASA (1)
- EC4SafeNano (1)
- EIS (1)
- EN AW 2618A (1)
- EN AW 2618A a (1)
- EPR (1)
- Early oxidation (1)
- Eigenschaften (1)
- Eigenspannung (1)
- Elastic constants (1)
- Elastic microstructure (1)
- Elasticity (1)
- Elctronic Lab Notebook (1)
- Electric field distribution (1)
- Electric field strength (1)
- Electrical insulation (1)
- Electrochemical deposition (1)
- Electrochemical dressing (1)
- Electromicroscopy (1)
- Electron Microscopy (1)
- Electron backscatter diffraction (1)
- Electron backscattered diffraction (EBSD) (1)
- Electron beam-induced fragmentation (1)
- Electron diffraction (1)
- Electron energy (1)
- Electropolishing (1)
- Elektronisches Laborbuch (ELN) (1)
- Elektrotechnische Grundlagen (1)
- Enamel (1)
- Endurance Limit (1)
- Energiedisersive Röntgenspektroskopie (1)
- Energiespeicherung (1)
- Energiewende (1)
- Energy distribution (1)
- Energy harvesting (1)
- Energy transition (1)
- Entwicklung (1)
- Environmentally assisted cracking (1)
- Epoxidharz (1)
- Epoxy (1)
- Ermüdungsriss (1)
- Etching (1)
- European Centre (1)
- Explosionsschutz (1)
- FAIR Data (1)
- FAIR Data Management (1)
- FAIR data. (1)
- FAIR principles (1)
- FCH JU (1)
- FNCT (1)
- FT-IR (1)
- Fabrication method (1)
- Failure test (1)
- Faser (1)
- Faser-Kunststoff-Verbund (1)
- Faseroptik (1)
- Faserverstärkte Kunstoffe (1)
- Fatigue Crack Growth (1)
- Fatigue Life Evaluation (1)
- Fatigue crack propagation (1)
- Fatigue damage (1)
- Fatigue fracture (1)
- Fatigue of sandwich structures (1)
- Fatigue performance (1)
- Fatigue testing (1)
- Federkonstante (1)
- Feldspar (1)
- Fem (1)
- Female noble prize winners (1)
- Ferritic Alloys (1)
- Fertigungsprozess (1)
- Fertigungstechnologie (1)
- Festigkeit (1)
- Fiber (1)
- Fiber reinforced polymers (1)
- Film depositition (1)
- Fine Powder (1)
- Finite element analysis (1)
- Finite elmenet simulation (1)
- Finite-Elemente-Methode (1)
- First year students (1)
- Flipped classroom (1)
- Flow Coefficient (1)
- Flowability (1)
- Fluorescence spectroscopy (1)
- Fluoride nanoparticles (1)
- Fluorolytic sol−gel (1)
- Focused Ion Beam (1)
- Focussed ion beam growth (1)
- Foliengießen (1)
- Force-distance diagram (1)
- Formerkennung (1)
- Fourier transform infrared spectroscopy (1)
- Fracture (1)
- Fracture Mechanics (1)
- Fracture behavior (1)
- Fracture mechanics (1)
- Fracture surface energy (1)
- Fracture toughness (1)
- Fragility (1)
- Freeze Drying (1)
- Fresnoit (1)
- Full Notch Creep Test (FNCT) (1)
- Full-Notch Creep Test (1)
- Full-notch creep test (1)
- Functional fatigue (1)
- Fungi (1)
- Fused Filament Fabrication (1)
- GC-MS (1)
- GFRP (1)
- Gas flow assisted powder deposition (1)
- Gas permeation (1)
- Gas storage (1)
- Gasabgabe (1)
- Gasdetektion (1)
- Gasgehalt (1)
- Gasturbinen (1)
- Gd3+ (1)
- Gefüge (1)
- Gefüge (Werkstoffkunde) (1)
- Gefügeuntersuchung (1)
- Gefügte Nickelbasislegierungen (1)
- General Aviation (1)
- General Chemistry (1)
- Geometrical factors (1)
- Geopolymers (1)
- Gitterfehlpassung (1)
- Glas fibre reinforced polymer (1)
- GlasDigital (1)
- Glasfaserverstärkter Kunststoff (1)
- Glasmatrixkomposit (1)
- Glass Fibres (1)
- Glass ceramic (1)
- Glass fiber reinforced polymer (1)
- Glass fibre reinforced plastics (1)
- Glass forming (1)
- Glass liner (1)
- Glass matrix composite (1)
- Glass melt (1)
- Glass melting (1)
- Glass scintillator (1)
- Glass screening device (1)
- Glass structure (1)
- Glass transformation temperature (1)
- Glass-ceramic (1)
- Glasses (1)
- Glasspeicher (1)
- Gleichgewicht (1)
- Gold nanoparticle synthesis (1)
- Gradient-enhanced damage (1)
- Grain boundaries (1)
- Granules (1)
- Granulometrie (1)
- Graphic design (1)
- Grenzflächenenergie (1)
- Grundlagen des Maschinenbaus (1)
- Grünfolieneigenschaften (1)
- Gypsum (1)
- HCF (1)
- HDPE Soprption (1)
- HDPE Sorption (1)
- HEA (1)
- HV-Insulation (1)
- Hardness test (1)
- Hartbearbeitung (1)
- Heat Treatments (1)
- Heißgasextraktion (1)
- Heißgaskorrosion (1)
- High - temperature corrosion (1)
- High Entropy Alloys (1)
- High Voltage Insulation (1)
- High alloyed steels (1)
- High cycle fatigue (1)
- High energy radiation (1)
- High entropy superalloys (1)
- High pressure gas storage (1)
- High-Temperature Corrosion (1)
- High-density polyethylene (PE-HD) (1)
- Hochentropielegierung (1)
- Hochentropielegierungen (1)
- Hochleistungskeramik (1)
- Hochspannungsprüfung (1)
- Hochtemperaturbrennstoffzelle (1)
- Hochtemperaturermüdung (1)
- Honing (1)
- Honing Stone (1)
- Horizon 2020 (1)
- Host-guest hybrid materials (1)
- Hot Press (1)
- Hot isostatic pressing (1)
- Hot isostatic pressing (HIP) (1)
- Hot pressing (1)
- Hot stage microscopy (1)
- Hybrid Manufacturing (1)
- Hydrogen gas (1)
- Hydrogen permeability (1)
- Hydrogen sensor (1)
- Hydrogen sensors (1)
- Hydrogen storage tank (1)
- Hyper-arid (1)
- IN738LC (1)
- IR spectroscopy (1)
- Imaging (1)
- Implant failures (1)
- Implants (1)
- In situ synthesis (1)
- In-Situ Testing (1)
- In-situ tomography (1)
- In718 (1)
- Inconel 625 (1)
- Inconel 686 coating (1)
- Inconel 718 (1)
- Indentation hardness (1)
- Informationstechnische Grundlagen (1)
- Initial attachment (1)
- Interface Strength (1)
- Interfacial Spinodal (1)
- Interfacial shear strength (1)
- Intermediate scale (1)
- Intermetallische FeAl-Legierungen (1)
- Inverse ostwald ripening (1)
- Investment casting (1)
- Ionic porosity (1)
- Iron oxide (1)
- Irregular topography (1)
- Kalzinierung (1)
- Kennwertermittlung (1)
- Keramische Folien (1)
- Kikuchi diffraction (1)
- Kikuchi pattern (1)
- Klebung (1)
- Knowledge Graph (1)
- Knowledge Graphs (1)
- Komponentenprüfung (1)
- Kreislaufwirtschaft (1)
- Kriechermüdung (1)
- Kriechversuche (1)
- Kristallisation (1)
- Kristallorientierung (1)
- Kristallsystem (1)
- Kunststoffe (1)
- Kupfer (1)
- Kurzfaser-verstärkte Thermoplaste (1)
- Kurzzeitfestigkeit (1)
- L-PBF 316L (1)
- LMD (1)
- LTCC multilayer (1)
- Laminographie (1)
- Langzeitstabilität (1)
- Laser Beam Melting (1)
- Laser Cladding (1)
- Laser Poeder Bed Fusion (1)
- Laser Scanning Microscopy (1)
- Laser Scanning Microscopy (LSM) (1)
- Laser curing (1)
- Laser induced slipcasting (1)
- Laser light scattering (1)
- Laser-Pulverbettschmelzen (1)
- Laser-induced slip casting (1)
- Laserbearbeitung (1)
- Laserscanningmikroskopie (LSM) (1)
- Lattices (1)
- Layer depostion (1)
- Layer system (1)
- Lebensdauervorhersage (1)
- Lecture films (1)
- Lecture videos (1)
- Legierung mit komplexer Zusammensetzung (1)
- Lehrfilm (1)
- Lehrfilmformate (1)
- Li-ion battery (1)
- Life cycle (1)
- Lifetime prediction (1)
- Lightweighting (1)
- Limestone Filler (1)
- Lithium-ion batteries (1)
- Lithography-based technologies (1)
- Local landscape evolution (1)
- Localized plasmons (1)
- Long-term storage (1)
- Lorenz transmission electron microscopy (1)
- Low Cycle Fatigue (LCF) (1)
- Low-Cycle Fatigue (LCF) (1)
- Low-Cycle-Fatigue (1)
- Low-cycle fatigue. (1)
- Low-cycle-fatigue behaviour (1)
- Lösungsmittel (1)
- Lötverbindung (1)
- MEA (1)
- MOUSE (1)
- Magnetic domains (1)
- Magnetische Domänen (1)
- Magnetoelastic effect (1)
- Magnetoelastischer Effekt (1)
- Martensitic steel (1)
- Mass transport (1)
- Masterschädigungslinie (1)
- Mat-o-lab (1)
- Material Life Cycle (1)
- Material characterization (1)
- Material defects (1)
- Material degradation (1)
- Material oxidation (1)
- MaterialDigital (1)
- Materialcharakterisierung (1)
- Materialentwicklung (1)
- Materialkreislauf (1)
- Materialmodell (1)
- Materialprüfung (1)
- Materials Chemistry (1)
- Materials Data Space (1)
- Materials Modelling (1)
- Materials Science (1)
- Materials and Processes Data Reusability (1)
- Materials science (1)
- Materials testing (1)
- Materialwissenschaft (1)
- Mathematisch-naturwissenschaftliche Grundlagen (1)
- Matrix (1)
- Mechanical Behavior (1)
- Mechanical Engineering (1)
- Mechanical Properties (1)
- Mechanical and thermal testing (1)
- Mechanics of Materials (1)
- Mechanisches Verhalten (1)
- Mechanistic Modelling (1)
- Medium Entropy Alloys (1)
- Medium entopy alloy (1)
- Medium-entropy alloy (1)
- Mehrachsige Verformung (1)
- Mehrskalenmodell (1)
- Melt pool boundary (1)
- Metal powder characterization (1)
- Metall (1)
- Metallic components (1)
- Metallic glasses (1)
- Metallic silver precipitates (1)
- Metallography (1)
- Metals and Alloys (1)
- Metformin (1)
- Metrologie (1)
- Metrology (1)
- Micro computed tomography (1)
- Micro-shrinkages (1)
- Microbiologically influenced corrosion (1)
- Microhardness (1)
- Micromanipulation (1)
- Microsegregation (1)
- Microstructural evolution (1)
- Microstructural orientation (1)
- Microstructure Analysis (1)
- Microstructure Characterization (1)
- Microstructure Evolution (1)
- Microstructure characterisation (1)
- Microstructure design (1)
- Microstructure modification (1)
- Mid-Level Ontology for MSE (1)
- Mikro-Computertomographie (1)
- Mikrogravitation (1)
- Mikrostrukturuntersuchung (1)
- Mindedestberstdruck (1)
- Mini-UAV (1)
- Missing acknowledgment (1)
- Mixed Ca-K-Na phosphates (1)
- Mn3O4 (1)
- Model alloy (1)
- Modell (1)
- Molecular Dynamics (1)
- Molecular dynamics (1)
- Monte-Carlo-Analysis (1)
- Mortar (1)
- Mortel (1)
- Multi-principal element alloys (1)
- Multiaxial deformation (1)
- Multiaxial stress state (1)
- NFDI-MatWerk (1)
- NIST (1)
- NMR (1)
- Na and K rhenanites (1)
- Nahinfrarotspektroskopie (1)
- Nano CRM (1)
- Nano material (1)
- Nano metal fluorides (1)
- Nano-assemblies (1)
- Nano-ceramic-additive-manufacturing photoresin (1)
- Nano-landscape (1)
- Nano-powder characterization (1)
- Nano-safety (1)
- NanoCAM (1)
- Nanoindentation (1)
- Nanomaterial screening (1)
- Nanomaterials (1)
- Nanoparticle synthesis (1)
- Nanopartikel (1)
- Nanoplattform (1)
- Nanostructure (1)
- Nanostructure quantification (1)
- Negative charged microparticle (1)
- Net zero (1)
- Networking (1)
- Neutron Diffraction (1)
- New standards (1)
- Ni-Mn-Ga (1)
- Nickel based coatings (1)
- Nickel-base alloy (1)
- Nickel-base superalloy (1)
- Nimonic 75 (1)
- Niobium alloying (1)
- Noble metal nanoparticles (1)
- Non-Destructive Testing (1)
- Non-desired foaming (1)
- Nondestructive testing (1)
- Nucleation (1)
- Nucleation mode (1)
- Nucleation tendency (1)
- Numerische Simulation (1)
- OECD TG (1)
- Oberflächenaktive wässrige Medien (1)
- Oberflächenkeimbildung (1)
- Online (1)
- Online quality control (1)
- Online teaching (1)
- Ontologies (1)
- Ooxidation (1)
- Optic (1)
- Optical backscatter reflectometry (1)
- Optical criterion (1)
- Optical fibre (1)
- Optical properties (1)
- Optical properties of glasses and ceramics (1)
- Optical spectroscopy (1)
- Orientation-dependent microstructure (1)
- Overaging (1)
- Oxide glass (1)
- Oxide scale (1)
- Oxides (1)
- P92 steels (1)
- PA6.6 (1)
- PPA (1)
- Parametric modeling (1)
- Particle Size Distribution (1)
- Particle morphology (1)
- Particle size determination (1)
- Partikelgröße (1)
- Patent (1)
- Pattern matching (1)
- Peem (1)
- Permeability (1)
- Persistent luminescence (1)
- Persistent luminescent (1)
- Phase Diagrams (1)
- Phase Separation (1)
- Phase analysis (1)
- Phase diagram (1)
- Phase field simulation (1)
- Phase separation (1)
- Phase transformation (1)
- Phase transformations (1)
- Phase-Field Simulation (1)
- Phase-Field Simulations (1)
- Phase-field (1)
- Phase-field Simulation (1)
- Phosphors (1)
- Photocatalysis (1)
- Photodynamic therapy (1)
- Physical properties (1)
- Physically based material model (1)
- Physics-informed Neural Network (1)
- Phytolith (1)
- Planetary surface (1)
- Platform Material Digital (1)
- Platform Material Digital (PMD) (1)
- Platform MaterialDigital (1)
- Platform MaterialDigital (PMD) (1)
- Plattform Material Digital (PMD) (1)
- Pole figures (1)
- Polyethylene (1)
- Polymer Matrix Composite (1)
- Polymer-Ceramic-Composite (1)
- Polymer-ceramic mixtures (1)
- Polymerwissenschaften (1)
- Porcelain (1)
- Pores (1)
- Portfolio (1)
- Powder bed density (1)
- Powder deposition (1)
- Powder-based processes (1)
- Powdered activated carbon (1)
- Power plant (1)
- Power-to-Gas (1)
- Precipitates (1)
- Precipitation Analysis (1)
- Precipitation hardening (1)
- Preparation (1)
- Pressure assisted sintering (1)
- Pressure-assisted sintering (1)
- ProMoAM (1)
- Process (1)
- Process Monitoring (1)
- Proficiency test (1)
- Property simulation (1)
- Protection (1)
- Prozessmonitoring (1)
- Pull-out (1)
- Pull-out composite materials (1)
- Pycnometry (1)
- Quality assurance (1)
- Quantitative Precipitation Analysis (1)
- Quantitative image analysis (1)
- Quantum dots (1)
- Radiation-matter interaction (1)
- Radii distribution (1)
- Rafting (1)
- Raman (1)
- Raman spectroscopy (1)
- Real time growth control (1)
- Recycling (1)
- Reference Data (1)
- Reference Dataset (1)
- Reference Material (1)
- Reference material BCR-425 (1)
- Reference nanomaterials (1)
- Reference nanoparticles (1)
- Referenzmaterial (1)
- Referenzorganismus (1)
- Referenzverfahren (1)
- Refractory chemically complex alloy (1)
- Refractory chemically complex alloys (1)
- Refractory high entropy alloys (1)
- Regelwerke (1)
- Relaxation (1)
- Relaxation metallic glasses (1)
- Relaxation tests (1)
- Relaxationsphänomene (1)
- Reliable characterization (1)
- Renewable ernergy (1)
- Repair of sandwich shell structures (1)
- Repair patch (1)
- Reproducibility (1)
- Residual stress analysis (1)
- Resistance (1)
- Resistance stress (1)
- Restberstfestigkeit (1)
- Reusability (1)
- Review (1)
- Rheology (1)
- Rhodonia placenta (1)
- Risikoanalyse (1)
- Rissausbreitung (1)
- Risse (1)
- Rissform (1)
- Rissfortschritt (1)
- Rissheilung (1)
- Rissverlauf (1)
- Robot-assisted galss melting (1)
- Robotic glass melting (1)
- Rohrprobekörper (1)
- Rotorblatt (1)
- Rotorblätter (1)
- S-Phase (1)
- SEM wood characterization (1)
- SEN-Probe (1)
- SHM (1)
- Safety assessment (1)
- Sailplane Development Panel (1)
- Sall-angle scattering (1)
- Salt melt (1)
- Salzschmelzen (1)
- Sandwich structures (1)
- Sandwichstruktur (1)
- Scaffold (1)
- Scanning Electron Microscopy (SEM) (1)
- Scanning electron microscope (1)
- Scanning electron microscopy (SEM) (1)
- Scanning transmission electron microscopy (STEM) (1)
- Scarf joint repair (1)
- Scarf joint repairs (1)
- Schadenskunde (1)
- Schalenprüfstand (1)
- Schlickerdeposition (1)
- SchwarzP cells (1)
- Schwerelosigkeit (1)
- Schwingbrüche (1)
- Schwingstreifen (1)
- Screen printing (1)
- Screening method (1)
- Segregation Engineering (1)
- Self-healing (1)
- Semantic Interioerability (1)
- Semantic Web technologies (1)
- Semantic structuring (1)
- Semantic web (1)
- Semantische Daten (1)
- Semiconductor materials (1)
- Sensing (1)
- Sensor (1)
- Sewage treatment plant (1)
- Shape-memory alloys (1)
- Silber (1)
- Silicatglas (1)
- Silikatkeramik (1)
- Silver (1)
- Silver cluster (1)
- Silver glass paste (1)
- Silver metallization paste (1)
- Silver precipitates (1)
- Silver-glass metallization paste (1)
- Simulation of concrete (1)
- Simulationsgestützte Gießkonzepte (1)
- Single crystal superalloys (1)
- Single-Crystal (1)
- Single-crystals (1)
- Sinter retardation (1)
- Sintering atmosphere (1)
- Sintermechanismen (1)
- Sintertemperatur (1)
- Sinterung (1)
- Size (1)
- Size and size distribution (1)
- Sliding simulation (1)
- Slip-rolling (1)
- Slow Crack Growth (SCG) (1)
- Slow crack growth (1)
- Slow crack growth (SCG) (1)
- Small angle x-ray scattering (1)
- Small-Angle X-ray Scattering (1)
- Small-angle scattering (1)
- Soda-lime-silica glass (1)
- Sodium zinc borate glass (1)
- Sodiumborosilicate glasses (1)
- Soil sample (1)
- Solid solution strengthening (1)
- Solidification (1)
- Space (1)
- Space exploration (1)
- Spark plasma sintering (1)
- Specific surface (1)
- Spezifische Oberfläche (1)
- Spinodal Decomposition (1)
- Split Hopkinson bar (1)
- Spring constant (1)
- Stainless steel (1)
- Stanzen (1)
- Steels (1)
- Strain rate dependence (1)
- Stratégies deprévention (1)
- Strength (1)
- Streuung (1)
- Structural health monitoring (SHM) (1)
- Structural steel (1)
- Structure (1)
- Structure property correlations (1)
- Structure-property correlation (1)
- Structured Data (1)
- Structured heating (1)
- Subsurface defects (1)
- Superalloy single crystals (1)
- Superalloys (1)
- Superaustenite steel (1)
- Supercritical/dense phase CO 2 (1)
- Superelasticity (1)
- Superlattice extrinsic stacking faults (1)
- Superlegierungen (1)
- Surface Nucleation (1)
- Surface nucleation (1)
- Surface-induced Melting (1)
- Swept wavelength interferometry (SWI) (1)
- Symbolik (1)
- Symmetric dwell periods (1)
- Synchrotron (1)
- Synchrotron CT (1)
- Synchrotron radiation (1)
- Synchrotron tomography (1)
- Systematische Schadensanalysen, Prozeduren (1)
- TAHYA (1)
- TED (1)
- TMF experiments (1)
- Tb3+ (1)
- Technical Ceramics (1)
- Technische Keramik (1)
- Temperature driven process (1)
- Tempered martensite ferritic steel (1)
- Tempered martensite ferritic steels (1)
- Tempered martensite-ferritic steel (1)
- Tensile stress relaxation (1)
- Tensile stress relaxation testing (1)
- Termites (1)
- Test Improvement (1)
- Texturation (1)
- Theranostics (1)
- Thermal degradation (1)
- Thermal stress (1)
- Thermische Analyse (1)
- Thermo mechanical fatigue (1)
- Thermo-mechanical fatigue (1)
- Thermo-mechanical-loading (1)
- Thermo-mechanics (1)
- Thermo-optical measurement (1)
- Thermoanalysis (1)
- Thermoanalytical Methods (1)
- Thermodynamic analysis (1)
- Thermodynamic stability (1)
- Thermodynamische Stabilität (1)
- Thermoelectric generator (1)
- Thermoelectric generator design (1)
- Thermoelectric oxide (1)
- Thermoelectric oxides (1)
- Thermoelektrika (1)
- Thermoelektrischer Generator (1)
- Thermogravimetric analysis (1)
- Thermomechanical Fatigue (TMF) (1)
- Thermomechanische Eigenschaften (1)
- Thermomechanische Ermüdung (1)
- Thermophysikalische Eigenschaften (1)
- Thermoplastic (1)
- Thesaurus (1)
- Thin tribofilm (1)
- Time-offlight Diffraction (TOFD) (1)
- Tomography (1)
- Tools (1)
- Tooth wear (1)
- Transducers (1)
- Transmission electron microscope (TEM) (1)
- Two-photon adsorption (1)
- Two-photon polymerization (1)
- Ultraschall (1)
- Ultrasonic Testing (1)
- Umgebungsbedingter Spannungsriss (1)
- Under cyclic loading (1)
- Ungleichgewicht (1)
- Unlegierter Baustahl (1)
- Upconversion (1)
- Upconversion nanoparticles (1)
- Utilization, and storage (CCUS) technology (1)
- VCSEL (1)
- VM12 SHC (1)
- Vacancies (1)
- Vacuum hot extraction (1)
- Verbundwerkstoff (1)
- Verbundwerkstoffe (1)
- Vernetzung (1)
- Versetzungsstrukturen (1)
- Very high cycle fatigue (1)
- Vickers Hardness (1)
- Vickers indentation (1)
- Virtueller Materialdatenraum (1)
- Viscose sintering (1)
- Viscous sintering (1)
- Viskoplastisch (1)
- Volume Fraction (1)
- Volume specific surface area (1)
- Wasserstoff (1)
- Wasserstofferzeugung (1)
- Waste water (1)
- Weibull distribution (1)
- Welding processing influences (1)
- Werkstoffauswahl (1)
- Werkstoffdaten (1)
- Werkstoffkennwerte (1)
- Werkstoffmechanische Prüfung (1)
- Wet dispersion (1)
- White light emitters (1)
- Wind turbine blade shell structures (1)
- Windkraft (1)
- Withstand voltage tests (1)
- Women in science (1)
- Workshop (1)
- Wärmespeicher (1)
- X-ray imaging (1)
- X-ray refractography (1)
- X-ray scattering (1)
- XRM (1)
- Young´s Modulus (1)
- Young’s Modulus (1)
- ZfP (1)
- Zirconia: yttria stabilized (1)
- Zug-Druck-Schubprüfung (1)
- Zugversuchsontologie (1)
- Zyklische Belastung (1)
- Zyklische R-Kurve (1)
- alumina (1)
- arbon capture (1)
- ausfgallfreie Lastwechsel (1)
- bioactive (1)
- biomaterials (1)
- bone (1)
- carbon steel (1)
- ceramic (1)
- ceramics (1)
- coarsening (1)
- condensate (1)
- dental (1)
- dispersion (1)
- electrochemical characterization (1)
- hardness (1)
- high entropy alloys (1)
- hydrogen storage (1)
- impurities (1)
- laser cladding (1)
- microstructure analysis (1)
- multi scale testing (1)
- oxidation (1)
- particle size determination (1)
- pitting corrosion (1)
- sample preparation (1)
- scanning electron microscopy (1)
- selective laser melting (1)
- statistische Auswertung (1)
- sulfidation (1)
- thermomechanische Beanspruchung (1)
- utilization, and storage (CCUS) technology (1)
- volume resistivity (1)
- zertifizierte Referenzmaterialien (1)
- Überblick (1)
Organisationseinheit der BAM
- 5 Werkstofftechnik (781)
- 5.2 Metallische Hochtemperaturwerkstoffe (211)
- 5.1 Mikrostruktur Design und Degradation (205)
- 5.4 Multimateriale Fertigungsprozesse (157)
- 5.6 Glas (107)
- 5.3 Polymere Verbundwerkstoffe (95)
- 5.5 Materialmodellierung (71)
- 8 Zerstörungsfreie Prüfung (71)
- 7 Bauwerkssicherheit (61)
- 9 Komponentensicherheit (60)
The aim of the task area Materials Data Infrastructure (TA-MDI) of the consortium Materials Science and Engineering (MatWerk) of National Research Data Infrastructure (NFDI) is to shape scientific datasets obtained through the Participant Projects (PPs) from a data management perspective conforming to the FAIR principles, making use of the FAIR Digital Object (FAIR DO) concept, including structured metadata and storage solutions. As an example, they apply PP18 (BAM) as a use case to demonstrate the proposed technical workflow.
Reference datasets in the MSE domain represent specific material properties, e.g., structural, mechanical, … characteristics. A reference dataset must fulfill high-quality standards, not only in precision of measurement but also in a comprehensive documentation of material, processing, and testing history (metadata). This Infrastructure Use Case (IUC) of the consortium Materials Science and Engineering (MatWerk) of National Research Data Infrastructure (NFDI) aims to develop, together with BAM and other Participant Projects (PP), a framework for generating reference material datasets using creep data of a single crystal Ni-based superalloy as a best practice example. In a community-driven process, we aim to encourage the discussion and establish a framework for identifying reference material datasets. In this poster presentation, we highlight our current vision and activities and intend to stimulate the discussion about the topic reference datasets and future collaborations and work.
Die HÜTTE ist ein Kompendium und Nachschlagewerk für unterschiedliche Aufgabenstellungen. Durch Kombination der Einzeldisziplinen dieses Wissenskreises kann das multidisziplinäre Grundwissen für die verschiedenen Technikbereiche und Ingenieuraufgaben zusammengestellt werden.
Die HÜTTE enthält in drei Bänden - orientiert am Stand von Wissenschaft und Technik und den Lehrplänen der Technischen Universitäten und Hochschulen - die Grundlagen des Ingenieurwissens.
Band 3 enthält die Elektro- und informationstechnische Grundlagen.
A Round Robin study has been carried out to estimate the impact of the human element in small-angle scattering data analysis. Four corrected datasets were provided to participants ready for analysis. All datasets were measured on samples containing spherical scatterers, with two datasets in dilute dispersions, and two from powders.
Most of the 46 participants correctly identified the number of populations in the dilute dispersions, with half of the population mean entries within 1.5 % and half of the population width entries within 40 %, respectively. Due to the added complexity of the structure factor, much fewer people submitted answers on the powder datasets.
For those that did, half of the entries for the means and widths were within 44 % and 86 % respectively. This Round Robin experiment highlights several causes for the discrepancies, for which solutions are proposed.
In nickelbasierten Superlegierungen, die für Gasturbinenschaufeln verwendet werden, sind bei hohen Betriebstemperaturen und -belastungen Kriechschäden, Ermüdung, Korrosion und Oxi-dation zu beobachten. Die betroffenen Turbinenschaufeln müssen ersetzt oder repariert werden, um Effizienzverluste und ein eventuelles Bauteilversagen zu vermeiden. In letzter Zeit wurden additive Fertigungs- und Lötverfahren für die Reparatur und das Fügen von Nickelbasiswerk-stoffen entwickelt, um die Einschränkungen der traditionellen Reparaturverfahren zu überwinden. Für eine auslegungsrelevante Bewertung des Risswachstumsverhaltens in den Fügezonen, die durch diese neuen Technologien erzeugt werden, sind Rissfortschrittsuntersuchungen erfor-derlich. Entsprechende Untersuchungen an gefügten Proben werden in diesem Beitrag vorge-stellt. Die Rissfortschrittsversuche werden an gefügten SEN-Proben (Single Edge Notch) bei einem Spannungsverhältnis von 0,1 und einer Temperatur von 950 °C durchgeführt. Das Riss-wachstum wird mit der DCPD-Methode (Direct Current Potential Drop) überwacht, und die ge-messenen Potenzialsignale werden anhand der optisch vermessenen Risslänge und einer Finite-Elemente-Analyse kalibriert. Der Spannungsintensitätsfaktor (SIF) für die gefügte SEN-Geometrie wird mit Hilfe von Finite-Elemente-Analysen berechnet. Auf diese Weise können Rissfortschrittskurven aus den experimentellen Daten abgeleitet werden.
The KupferDigital project aims to develop digital methods, tools, and data space infrastructures for digitalizing the entire life cycle of copper materials. The mechanical testing process is one of the main chains of such life cycles which generates lots of important testing data about the mechanical properties of the materials and their related materials and testing metadata. To train the digitalization of the mechanical testing process, different kinds of copper alloys were provided for this project, and their mechanical properties were measured by typical methods like Brinell and Vickers hardness and tensile testing. The primary raw testing data as well as the secondary datasets of these tests are provided. The detailed materials specifications, the utilized mechanical testing methods, and provided datasets are described in the content file. The test data files of heterogeneous structures are processed by the KupferDigital digital tools to be converted to standardized machine-readable data files.
Due to their unique physico-chemical properties, nanoparticles are well established in research and industrial applications. A reliable characterization of their size, shape, and size distribution is not only mandatory to fully understand and exploit their potential and develop reproducible syntheses, but also to manage environmental and health risks related to their exposure and for regulatory requirements. To validate and standardize methods for the accurate and reliable particle size determination nanoscale reference materials (nanoRMs) are necessary. However, there is only a very small number of nanoRMs for particle size offered by key distributors such as the National Institute of Standards and Technology (NIST) and the Joint Research Centre (JRC) and, moreover, few provide certified values. In addition, these materials are currently restricted to polymers, silica, titanium dioxide, gold and silver, which have a spherical shape except for titania nanorods. To expand this list with other relevant nanomaterials of different shapes and elemental composition, that can be used for more than one sizing technique, we are currently building up a platform of novel nanoRMs relying on iron oxide nanoparticles of different shape, size and surface chemistry. Iron oxide was chosen as a core material because of its relevance for the material and life sciences.
Als elektrische Durchschlagfestigkeit bezeichnet man die elektrische Feldstärke, bei der es zur Entladung durch ein isolierendes Medium kommt. Im Falle von Festkörpern ist dies ein zerstörender Prozess. Bei der messtechnischen Bestimmung der Durchschlagfestigkeit haben neben den verwendeten Messgeräten auch die eingesetzten Elektroden, die Form des Prüfkörpers und das Isoliermedium, in dem die Prüfung stattfindet, einen signifikanten Einfluss auf die ermittelten Messwerte. Im Vortrag werden die Einflüsse erläutert und anhand von Messreihen aus der Literatur und der eigenen Forschung quantifiziert. Aufgrund der vorgestellten Effekte wird klar, dass es sich bei elektrischer Durchschlagfestigkeit nicht um absolute Materialkennwerte handelt, sondern vielmehr um systemabhängige Größen.
A new patented dynamic mechanical analysis (DMA) is presented, where the tensile, bending- or torsional stiffness of a media can be characterized in-situ during the phase transition from liquid to solid. An epoxy system, e.g. Hexion L285/H287, is filled into an elastomer container, such as a silicone tube. This can be mounted into a conventional OMA and, based on a linear viscoelastic approach, the storage modulus (E';G'), the loss modulus (E'';G'') and the loss angle tan(δ) can be measured at constant temperature as a function of time in order to investigate the liquid to sol-gel to solid transition. With this new method, the stiffness increase as a result of the cure process can be directly measured more precisely than with a rheometer in a shear plate set-up, because using an elastomer container gives a defined cross section for calculating the Young's modulus.
Lithium-ion batteries (LIBs) are one technology to overcome the challenges of climate and energy crisis. They are widely used in electric vehicles, consumer electronics, or as storage for renewable energy sources. However, despite innovations in batteries' components like cathode and anode materials, separators, and electrolytes, the aging mechanism related to metallic aluminum current collector degradation causes a significant drop in their performance and prevents the durable use of LIBs.[1] Glow-discharge optical emission spectroscopy (GD-OES) is a powerful method for depth-profiling of batteries' electrode materials. This work investigates aging-induced aluminum deposition on commercial lithium cobalt oxide (LCO) batteries' cathodes. The results illustrate the depth-resolved elemental distribution from the cathode surface to the current collector. An accumulation of aluminum is found on the cathode surface by GD-OES, consistent with results from energy-dispersive X-ray spectroscopy (EDX) combined with focused ion beam (FIB) cutting. In comparison to FIB-EDX, GD-OES allows a fast and manageable depth-profiling. Results from different positions on an aged cathode indicate an inhomogeneous aluminum film growth on the surface. The conclusions from these experiments can lead to a better understanding of the degradation of the aluminum current collector, thus leading to higher lifetimes of LIBs.
Fully-reversed fatigue behavior of scarf joint repairs for wind turbine blade shell applications
(2022)
To enable a quick and cost-effective return to service for wind turbine blades, localized repairs can be executed by technicians in the field. Scarf repairs, shown to be highly efficient with a smooth load transition across angled joint walls and a restored aerodynamic profile, are the focus of this work. The failure mechanisms of these structures were examined under quasi-static tensile and fully-reversed cyclic loading. While the scarf ratio was held constant at 1:50, the repair layup was varied between large-to-small and small-to-large. The effect of the presence of resin pockets and the fiber orientation mismatch between parent and repair material on the restored strength of BIAX ±45° glass fiber reinforced polymer scarf joint structures was studied.
Die Steigerung der Leistung und des thermodynamischen Wirkungsgrades von Verbrennungsmotoren führt zu erhöhten Anforderungen an die Festigkeit abgasführender Komponenten wie z. Bsp. Abgasturbolader. Als Folge erhöhter thermomechanischer Wechselbeanspruchungen (TMF) im Betrieb kommt es an den mechanisch und/oder thermisch höchst beanspruchten Stellen der Bauteile zur Bildung von Rissen, wodurch die Lebensdauer der Komponenten begrenzt wird. Derzeit werden bei Turboladern heißgehende Bauteile mit detektierten Rissen zumeist prophylaktisch ersetzt, da die weitere Ausbreitung der Risse während des Betriebs nicht vorhergesagt werden kann. Um diese aufwändige und un- ökonomische Praxis zu vermeiden, wurde im vorliegenden Forschungsvorhaben eine rechnerische Bewertungsmethode auf Basis der experimentellen und numerischen Bruchmechanik erarbeitet, mit deren Hilfe bereits in der Auslegungsphase oder während des Betriebs die (restliche) Lebensdauer der abgasführenden Komponenten vorhergesagt werden kann. Damit wird erstmalig die quantitative Vorhersage der Rissentwicklung bei TMF-Beanspruchungsbedingungen unter Berücksichtigung großer zyklischer viskoplastischer Verformungen ermöglicht.
Zentrales Ergebnis des Vorhabens ist eine automatisierte Berechnungsprozedur auf der Basis spezieller Finite-Elemente-Techniken (FEM), womit sowohl der Pfad als auch die Größe eines Risses als Funktion der Anzahl der Lastwechsel in Bauteilen unter TMF-Bedingungen berechnet werden kann. Als geeigneter Beanspruchungsparameter zur Bewertung des Rissfortschritts unter TMF wurde die zyklische Rissöffnungsverschiebung ΔCTOD verwendet. Das Werkstoffverhalten des betrachteten austenitischen Gusseisens Ni-Resist D-5S wurde mit einem validierten viskoplastischen, temperaturabhängigen Materialmodell modelliert, das zur Berücksichtigung große Verzerrungen und Rotationen am Riss erweitert wurde. Für die genaue Berechnung des ΔCTOD bei TMF wurden effiziente FEM-Techniken erarbeitet. Zur Simulation der Rissausbreitung wurde ein automatischer FEM-Algorithmus mit inkrementeller adaptiver Neuvernetzung entwickelt, bei dem die Verformungen und inelastischen Zustandsvariablen jeweils vom alten auf das neue Netz übertragen werden. Dieser Algorithmus wurde im Software-Paket ProCrackPlast implementiert, das in Verbindung mit dem kommerziellen FEM-Code Abaqus zur Lösung dreidimensionaler Rissprobleme zur Verfügung steht. Ziel der umfangreichen experimentellen Arbeiten war es, an isothermen LCF und anisothermen TMF-Versuchen mit gekerbten Flachzugproben (SENT) das Risswachstum im Temperaturbereich von 20 °C bis 700 °C zu ermitteln. Mit Hilfe begleitender 2D FEM Simulationen wurden anhand dieser Datenbasis die Rissfortschrittskurven des Werkstoffs unter Anwendung des ΔCTOD-Konzepts bestimmt und in geeigneter, parametrisierter Form den Nutzern zur Verfügung gestellt. Die Versuche an SENT-Proben wurden mit der entwickelten Software ProCrackPlast als 3D Modell simuliert. Der Vergleich der 2D und 3D Simulationen ergab einen systematischen Unterschied im CTOD und CTOD, der mit Hilfe eines Übertragungsfaktors korrigiert wurde. Der Vergleich der 3D Berechnungen mit den Experimenten zeigte eine zufriedenstellende Übereinstimmung der er- reichten Risslänge mit der Zahl der Lastzyklen im gesamten Temperaturbereich, wobei die numerische Prognose meist auf der konservativen / sicheren Seite lag. Die Übertragbarkeit der Ergebnisse der 2D Parameteridentifikation auf 3D Risskonfigurationen mit Mixed-Mode Beanspruchung ist mit zusätzlichen Versagenshypothesen verbunden, die aufgrund fehlender Versuchsdaten im Vorhaben nicht endgültig geklärt werden konnten. Zur Validierung des Gesamtkonzeptes wurden LCF-Proben mit einem bauteil- typischen Oberflächenriss experimentell und numerisch untersucht. In der Simulation konnte die komplexe Form und Größe der Rissentwicklung zufriedenstellend (richtig) vorhergesagt werden. Die Leis- tungsfähigkeit der erarbeiteten rechnerische Bewertungsmethode wurde an weiteren TMF-Beispielen vorgestellt und diskutiert. Die Software ProCrackPlast und die viskoplastische Materialroutine wurden dem Anwenderkreis des Vorhabens zusammen mit einem Nutzer-Handbuch und Verifikationsbeispielen zur Verfügung gestellt.
Das Ziel des Forschungsvorhabens ist erreicht worden.
Due to combined cyclic mechanical and thermal loading during operation, the material of exhaust gas conducting components of combustion engines is exposed to thermomechanical fatigue (TMF). This leads to formation and growth of cracks, especially at the most highly stressed points of these components. In order to better predict the service life of cracked components before failure, it is necessary to identify a crack propagation law for the material used. Isothermal crack propagation tests have been carried out at several temperatures with a typical cast iron to identify such a law. The crack length is measured by the potential drop method. The compliance method, fractography and thermographic camera measurements have been used to validate and calibrate the potential drop measurements. Each of the isothermal tests has been simulated using a specially developed FEM-algorithm based on remeshing and remapping. This algorithm has been implemented in python and ABAQUS. Thereby, the crack tip region is modeled by collapsed Quad8 elements. From the individual simulations, the cyclic crack tip opening displacement (ΔCTOD) is extracted and regarded as a potential fracture mechanics parameter which controls the crack growth rate. By combining the data from the experiments and the simulations, the crack propagation law has been identified. Finally, anisothermal crack propagation tests have been performed for validation of the crack growth law.
Die zunehmende geopolitische Bedeutung der Ressourcenverfügbarkeit sowie die Anforderungen an einen geschlossenen Materialkreislauf treiben die Materialforschung voran, um konventionelle Werkstoffe mit weniger kritischen Zusätzen zu legieren oder sogar vollständig mit nachhaltigeren Alternativen zu substituieren. Eine potenzielle Alternative stellen die intermetallischen Eisenaluminid-Legierungen (FeAl) dar. Im Labormaßstab wurden bereits viele Legierungskonzepte für verbesserte Hochtempera- tureigenschaften oder Duktilität erfolgreich gießtechnisch umgesetzt. Eine erfolgreiche Erprobung von FeAl-Legierungen im industriellen Maßstab stand zu Beginn des Projekts aber weiterhin aus. Ziel des Vorhabens war daher die Entwicklung von simulationsgestützten Gießkonzepten in industrienahe Gießprozesse anhand der Modelllegierung Fe-26Al-4Mo-0,5Ti-1B und die Eingrenzung der prozesstechnischen Verfahrensgrenzen durch Warmrissversuche. Erkenntnisse hieraus wurden in einen praxisorientierten, für zukünftige Anwender in KMUs zugänglichen Handlungskatalog für die gießgerechte Auslegung von Bauteilen aus Eisenaluminiden überführt. Fokus wurde insbesondere auf das Feinguss- und Kokillengussverfahren im Schleuderguss gesetzt. Neben zahlreicher Konstruktions- und Gießprozessparameter wurden auch Wärmebehandlungen und Legierungszusätze (Al, Mo, B) variiert, um den Einfluss von Legierungselementen auf Gießbarkeit, Mikrostruktur und mechanische Kennwerte zu be- stimmen. Eine umfangreiche Basis an Daten aus Mikrostrukturanalysen (Mikroskopische Bildgebung, Bestimmung von Korngrößen sowie Phasenzusammensetzungen und -anteilen, Fraktographie), mechanischen Tests (Härtemessungen, Druckversuch, Zugversuch, Warmzugversuch, Kriechversuch) sowie Messungen thermophysikalischer Eigenschaften konnte für die Modelllegierung erzeugt werden. Korrelationen dieser Informationen mit Prozessvariablen erlaubten Schlussfolgerungen zu Härtungsmechanismen und Duktilität in der Legierung und wie sie prozesstechnisch in Gieß- und Bauteilauslegung gesteuert werden können. Der erfolgreiche Abguss von hochkomplexen Bauteilgeometrien mit dünnen Wandstärken sowie optimierte Legierungszusammensetzungen zeigen Perspektiven auf neue Anwendungsfelder auf.
Das Ziel des Forschungsvorhabens ist erreicht worden.
This contribution contains the raw data used to compare experimental results with thermodynamic calculations using the CALPHAD method, which is related to the research article “The AlMo0.5NbTa0.5TiZr refractory high entropy superalloy: experimental findings and comparison with calculations using the CALPHAD method” [1] , and therefore this article can be used as a basis for interpreting the data contained therein. The AlMo0.5NbTa0.5TiZr refractory superalloy was characterized in the cast and annealed condition (1400 °C for 24 h) in order to measure grain size and to identify and measure the size and area fraction of the phases present. The raw data of this article include X-ray diffraction (XRD) measurements, microstructural characterization by scanning and transmission electron microscopy (SEM and TEM), and elemental analysis by energy dispersive X-ray spectroscopy (EDX). XRD includes the determination of phases and the lattice parameters (A2, B2, and hexagonal structure). Microstructural analysis by scanning and transmission electron microscopy includes (1) identification of composition, size, and volume fraction of the present phases and (2) determination of grain size. Based on these experimental data, it is possible to identify similarities and discrepancies with the data calculated using the CALPHAD method for the alloy under study in Ref. [1] , which provides the basis for better and more efficient development of reliable databases.
Das hochaktuelle Thema der Integration und Wiederverwendung von Wissen und Daten aus Herstellung, Bearbeitung und Charakterisierung von Materialien ('Digitalisierung von Materialien') wird in den Projekten Innovationsplattform MaterialDigital (PMD, materialdigital.de) und Materials-open-Lab (Mat-o-Lab, matolab.org) adressiert. In diesem Beitrag werden die Weiterentwicklungen in diesen Projekten hinsichtlich der Speicherung von Zugversuchsdaten gemäß einer normenkonformen (DIN EN ISO 6892-1:2019-11) ontologischen Repräsentation vorgestellt. Das umfasst den Weg von der Entwicklung einer Ontologie nach Norm, der Konvertierung von Daten aus Standardtests in das interoperable RDF-Format bis hin zur Verknüpfung von Ontologie und Daten. Letztendlich können die entsprechenden Daten in einem Triple Store abgelegt und abgefragt werden.
Komponenten von Fahrrädern werden im Betrieb vorwiegend schwingend beansprucht. Typische Werkstoffe sind Stahl, Aluminiumlegierungen, Messing, CFK und thermoplastische Kunststoffe. Da es sich, unabhängig von der Preiskategorie, um konstruktiven Leichtbau handelt, werden einige Bauteile betriebsfest mehr oder weniger weit oberhalb der Dauerfestigkeit ausgelegt. Die im normalen Betrieb auftretenden Schäden sind daher weit überwiegend Schwingbrüche. Andere Schadensmechanismen wie z.B. Korrosion spielen quantitativ eine untergeordnete Rolle. Schwingbrüche treten nach einer Periode unbemerkten Risswachstums oft ohne Vorwarnung und ohne makroskopische Verformung auf. Im Falle von sicherheitsrelevanten Komponenten wie Rahmen, Gabeln, Lenkern, Sattelstützen, Kurbelarmen oder Pedalen kann dies zu erheblichen Personenschäden führen, die den Wert des ursächlichen Bauteilschadens weit überschreiten.
Über einen langjährigen Zeitraum wurden gebrochene Komponenten aus dem Alltag und aus Gerichtsverfahren analysiert. Das Hauptaugenmerk lag hierbei auf der fraktographischen Analyse, teilweise wurden die zu Grunde liegenden Schadensursachen ermittelt. Einflussfaktoren sind beispielsweise konstruktive Kerben an ungünstigen Stellen, aber auch Werkstoffwahl und Fertigungsqualität spielen eine Rolle. In den meisten Fällen wurde jedoch die konstruktive Lebensdauer überschritten. Diese wird praktisch nie mitgeteilt, und eine wiederkehrende Prüfung sicherheitsrelevanter Bauteile findet nicht statt.
Im Sinne der Vermeidung von Schäden und Unfällen könnte darauf hingewirkt werden, für sicherheitsrelevante Komponenten Lebensdauern besser abzuschätzen und von der Laufleistung abhängige Sichtprüfungen zu empfehlen.
Small-angle scattering data analysis round robin - Anonymized results, figures and Jupyter notebook
(2023)
The intent of this round robin was to find out how comparable results from different researchers are, who analyse exactly the same processed, corrected dataset.
This zip file contains the anonymized results and the jupyter notebook used to do the data processing, analysis and visualisation. Additionally, TEM images of the samples are included.
Laser powder bed fusion (PBF-LB/M) of metallic alloys is a layer wise additive manufacturing process which provides significant scope for more efficient designs of components, benefiting performance and weight, leading to efficiency improvements for various sectors of industry. However, to benefit from these design freedoms, knowledge of the high produced induced residual stress and mechanical property anisotropy associated with the unique microstructures is critical. X-ray and neutron diffraction are considered the benchmark for non-destructive characterization of surface and bulk internal residual stress. The latter, characterized by the high penetration power in most engineering alloys, allows for the use of diffraction angle close to 90° enabling a near cubic sampling volume to be specified. However, the complex microstructures of columnar growth with inherent crystallographic texture typically produced during PBF-LB/M of metallics present significant challenges to the assumptions typically required for time efficient determination of residual stress. These challenges include the selection of an appropriate set of diffraction elastic constants and a representative strain-free reference for the material of interest. In this presentation advancements in the field of diffraction-based residual stress analysis of L-PBF Inconel 718 will be presented. The choice of an appropriate set of diffraction-elastic constants depending on the underlying microstructure will be described.
In diesem Artikel werden die verschiedenen additiven Fertigungsverfahren und ihre Anwendungsmöglichkeiten vorgestellt. Der Fokus liegt hierbei auf Silikatkeramik. Für jedes 3D Druckverfahren werden die Möglichkeiten mit Silikatkeramik, Hochleistungskeramik und Dentalkeramik aufgezeigt. Auf den Nutzen der verschiedenen 3D Druckverfahren für industrielle Anwendungen, den privaten Bereich, sowie die Verwendung für Kunst und Design wird eingegangen. Das Potenzial der Additiven Fertigung wird auch für den Bereich der Keramik in der dentalen Anwendung bewertet.
Das zyklische plastische Verformungsverhalten von additiv gefertigtem Edelstahl AISI 316L wurde in dehnungsgeregelten Kurzzeitfestigkeitsversuchen (LCF-Versuchen) untersucht. Dabei wurden zwei Wärmebehandlungszustände betrachtet: Beim ersten Zustand war die fertigungsbedingte zelluläre Struktur vorhanden, während sie durch die zweite Wärmebehandlung aufgelöst wurde. Untersuchungen im Transmissions-Elektronen-Mikroskop (TEM) zeigten, dass die zyklische Verformung die Zellstruktur lokal zerstörte und Gleitbänder entstanden, was die Entfestigung in diesem Fall erklärt. Für Material ohne Zellstrukturen resultierten nach zyklischer Verformung ähnliche Versetzungsstrukturen wie in konventionell gefertigtem (warmgewalzten) Material.
Seit Beginn der Luftfahrt Anfang des letzten Jahrhunderts ist die Menschheit auf der Suche nach neuen Materialien, die das Abenteuer Fliegen sicherer, angenehmer, schneller und rentabler gestalten. Hochentropielegierungen sind solche vielversprechenden Materialien. Die richtige Analytik hilft dabei, besser zu verstehen, wie deren Zusammensetzung und atomare Anordnung die makroskopischen Eigenschaften beeinflusst.
Der Beitrag beinhaltet Themen vom H2Safety@BAM-Kompetenzfeld Sensorik, Analytik und zertifizierte Referenzmaterialien (SensRef) mit Fokus auf Mess- und Prüfverfahren mit verschiedenen Sensortechnologien und Ultraschallwellen:
Metrologie zur Wasserstoffspeicherung - Euramet-Vorhaben "MefHySto",
Erkennung von freigesetztem Wasserstoff sowie die Bestimmung des Wasserstoff-Luftverhälntisses mit Gassensoren, zerstörungsfreie Fehlstellenerkennung mit integriertem Zustandsüberwachungssystem basierend auf geführten Ultraschallwellen zur Lebensdauerüberwachung von Composite-Behältern (Wasserstoffspeicher) sowie faseroptische Sensorik zur Schadenfrüherkennung von Wasserstoffspeichern aufgrund erkennbarer Dehnungsänderungen an Druckbehältern.
Within NFDI-MatWerk (“National Research Data Infrastructure for Material Sciences”/ “Nationale Forschungsdateninfrastruktur für Materialwissenschaften und Werkstofftechnik“), the Task Area Materials Data Infrastructure (TA-MDI) will provide tools and services to easily store, share, search, and analyze data and metadata. Such a digital materials environment will ensure data integrity, provenance, and authorship. The MatWerk consortium aims to develop specific solutions jointly with Participant Projects (PPs), which are scientific groups or institutes covering different domains, from theory and simulations to experiments. The Data Exploitation Methods group of the Karlsruhe Institute of Technology-Steinbuch Centre of Computing, as part of TA-MDI, is developing specific solutions in close collaboration with three PPs.
PP07, together with the University of Stuttgart, aims at the image-based prediction of the material properties of stochastic microstructures using large-scale supercomputers. PP13, in cooperation with the University of Saarland, focuses on tomographic methods at various scales in materials research. PP18, together with the Federal Institute for Materials Research and Testing (“Bundesanstalt für Materialforschung und -prüfung”), aspires to define the criteria for materials reference datasets and usage analytics.
The requirements and goals are comparable for each PP: their research outputs, which are scientific datasets, should conform to the FAIR (Findable, Accessible, Interoperable, Reusable) principles. We aim to shape them from a data management perspective making use of the FAIR Digital Object concept, including structured metadata and storage solutions. The results will be a blueprint which will act as a reference for future datasets. Even though the collaboration is in an early stage, the initial steps already show the added value of this approach.
This research has been supported by the Federal Ministry of Education and Research
(BMBF) – funding code M532701 / the Deutsche Forschungsgemeinschaft (DFG, German
Research Foundation) - project number NFDI 38/1, project no. 460247524.
Investigation of degradation of the aluminum current collector in lithium-ion batteries by GD-OES
(2022)
Lithium-ion batteries (LIBs) are one technology to overcome the challenges of climate and energy crisis. They are widely used in electric vehicles, consumer electronics, or as storage for renewable energy sources. However, despite innovations in batteries' components like cathode and anode materials, separators, and electrolytes, the aging mechanism related to metallic aluminum current collector degradation causes a significant drop in their performance and prevents the durable use of LIBs. Glow-discharge optical emission spectroscopy (GD-OES) is a powerful method for depth-profiling of batteries' electrode materials. This work investigates aging-induced aluminum deposition on commercial lithium cobalt oxide (LCO) batteries' cathodes. The results illustrate the depth-resolved elemental distribution from the cathode surface to the current collector. An accumulation of aluminum is found on the cathode surface by GD-OES, consistent with results from energy-dispersive X-ray spectroscopy (EDX) combined with focused ion beam (FIB) cutting. In comparison to FIB-EDX, GD-OES allows a fast and manageable depth-profiling. Results from different positions on an aged cathode indicate an inhomogeneous aluminum film growth on the surface. The conclusions from these experiments can lead to a better understanding of the degradation of the aluminum current collector, thus leading to higher lifetimes of LIBs.
Trace elements play an important role in the fine-tuning of complex material properties. This study focuses on the correlation of microstructure, lattice misfit and creep properties. The compositionally complex alloy Al10Co25Cr8Fe15Ni36Ti6 (in at. %) was tuned with high melting trace elements Hf and W. The microstructure consists of a γ matrix, γ' precipitates and the Heusler phase and it is accompanied by good mechanical properties for high temperature applications. The addition of 0.5 at.% Hf to the Al10Co25Cr8Fe15Ni36Ti6 alloy resulted in more sharp-edged cubic γ′ precipitates and an increase in the Heusler phase amount. The addition of 1 at.% W led to more rounded γ′ precipitates and the dissolution of the Heusler phase. The shapes of the γ' precipitates of the alloys Al9.25Co25Cr8Fe15Ni36Ti6Hf0.25W0.5 and Al9.25Co25Cr8Fe15Ni36Ti6Hf0.5W0.25, that are the alloys of interest in this paper, create a transition from the well-rounded precipitates in the alloy with 1% W containing alloy to the sharp angular particles in the alloy with 0.5% Hf. While the lattice misfit has a direct correlation to the γ' precipitates shape, the creep rate is also related to the amount of the Heusler phase. The lattice misfit increases with decreasing corner radius of the γ' precipitates. So does the creep rate, but it also increases with the amount of Heusler phase. The microstructures were investigated by SEM and TEM, the lattice misfit was calculated from the lattice parameters obtained by synchrotron radiation measurements.
The Global Exploration Strategy of the International Space Exploration Coordination Group (ISECG) describes a timeframe of 2020 and beyond with the ultimate aim to establish a human presence on Mars towards the 2040ies. The next steps lie on the Moon with a focus on the coming 10 years. Early lunar surface missions will establish a capability in support of lunar science and prepare and test mission operations for subsequent human exploration of Mars and long-duration human activities on the Moon.
Given the extreme costs involved in the shipping of material from Earth, a prerequisite for future human exploration is the manufacturing of elements directly on the Moon’s surface. Unlike the equipment, which at the beginning will have to be brought from Earth, raw materials and energy could be available following the concept of In-Situ Resource Utilization. The ESA OSIP PAVING THE ROAD (PAVER) study investigates the use of a laser to sinter regolith into paving elements for use as roadways and launch pads thus mitigating dust issues for transport and exploration vehicles.
The ESA-funded study examines the potential of using a laser (12 kW CO2 laser with spot beam up to 100 mm) for layer sintering of lunar and martian regolith powders to manufacture larger 3D elements and provide know-how for the automatic manufacture of paving elements in the lunar environment. The project contributes to the first step toward the establishment of a lunar base and will lead to the construction of equipment capable of paving areas and manufacturing 3D structures.
PAVER project sets the starting point for an examination of the larger context of lunar exploration. Mission scenarios will look at different phases of lunar exploration: Robotic Lunar Exploration, Survivability, Sustainability, and Operational Phase. A proposed Technology Roadmap investigates the mission scenario and analyses how, and to which extent, laser melting/sintering will play a role in the various phases of exploration. The paper contextualizes laser sintering within selected mission scenarios and discusses the different kinds of infrastructure that can be produced at each phase of the mission. The outcome of the study includes the detailing of the TRL steps in the project and an outline of a timeline for the different elements. Covered aspects include terrain modelling such as operation pads, roadways, or towers, non-pressurized building structures to protect machinery, and habitat envelopes, to protect and shield humans against dust, micrometeoroids, and radiation.
Powder bed technologies are amongst the most successful Additive Manufacturing (AM) techniques. Powder bed fusion and binder jetting especially are leading AM technologies for metals and polymers, thanks to their high productivity and scalability. The application of these techniques to most ceramics has been difficult so far, because of the challenges related to the deposition of homogeneous powder layers when using fine powders. In this context, the “layerwise slurry deposition” (LSD) has been developed as a layer deposition method which enables the use of powder bed AM technologies also for advanced ceramic materials. The layerwise slurry deposition consists of the layer-by-layer deposition of a ceramic slurry by means of a doctor blade, in which the slurry is deposited and dried to achieve a highly packed powder layer. This offers high flexibility in the ceramic feedstock used, especially concerning material and particle size. The LSD technology can be combined with binder jetting to develop the so-called “LSDprint” process for the additive manufacturing of ceramics. The LSDprint technology combines the high-speed printing of binder jetting with the possibility of producing a variety of high-quality ceramics with properties comparable to those achieved by traditional processing. In this presentation, the LSD process will be introduced and several examples of application ranging from silicate to high-performance ceramics will be shown. Recent developments towards the scale-up and industrialization of this process will be discussed, alongside future perspectives for the multi-material additive manufacturing.
At the Workshop "Neutron and Synchrotron Monitoring in Aerospace Advanced Manufacturing" at the Institute of Materials Physics in Space, German Aerospace Center (DLR) in Cologne, we presented on the opportunities and our experiences of using a powder based additive manufacturing process for in-space manufacturing applications in microgravity.
The Global Exploration Strategy of the International Space Exploration Coordination Group (ISECG) describes a timeframe of 2020 and beyond with the ultimate aim to establish a human presence on Mars towards the 2040ies. The next steps lie on the Moon with a focus on the coming 10 years. Early lunar surface missions will establish a capability in support of lunar science and prepare and test mission operations for subsequent human exploration of Mars and long-duration human activities on the Moon.
Given the extreme costs involved in the shipping of material from Earth, a prerequisite for future human exploration is the manufacturing of elements directly on the Moon’s surface. Unlike the equipment, which at the beginning will have to be brought from Earth, raw materials and energy could be available following the concept of In-Situ Resource Utilization. The ESA OSIP PAVING THE ROAD (PAVER) study investigates the use of a laser to sinter regolith into paving elements for use as roadways and launch pads thus mitigating dust issues for transport and exploration vehicles.
The ESA-funded study examines the potential of using a laser (12 kW CO2 laser with spot beam up to 100 mm) for layer sintering of lunar and martian regolith powders to manufacture larger 3D elements and provide know-how for the automatic manufacture of paving elements in the lunar environment. The project contributes to the first step toward the establishment of a lunar base and will lead to the construction of equipment capable of paving areas and manufacturing 3D structures.
PAVER project sets the starting point for an examination of the larger context of lunar exploration. Mission scenarios will look at different phases of lunar exploration: Robotic Lunar Exploration, Survivability, Sustainability, and Operational Phase. A proposed Technology Roadmap investigates the mission scenario and analyses how, and to which extent, laser melting/sintering will play a role in the various phases of exploration. The paper contextualizes laser sintering within selected mission scenarios and discusses the different kinds of infrastructure that can be produced at each phase of the mission. The outcome of the study includes the detailing of the TRL steps in the project and an outline of a timeline for the different elements. Covered aspects include terrain modelling such as operation pads, roadways, or towers, non-pressurized building structures to protect machinery, and habitat envelopes, to protect and shield humans against dust, micrometeoroids, and radiation.
As part of a joint project involving the Fraunhofer Institute for Silicate Research (ISC), the Friedrich Schiller University of Jena, the Clausthal University of Technology and the Federal Institute for Materials Research and Testing (BAM), digital tools are to be created for the development of new types of glass materials. Current processes for the production of glasses with improved properties are usually very cost- and energy-intensive due to the low degree of automation and are subject to long development cycles. The use of robotic synthesis processes in combination with self-learning machines is intended to overcome these problems in the long term. The development of new types of glass can then not only be accelerated considerably, but also be achieved with much less effort.
In this talk, data generation via a robotic high-throughput glass melting system is presented, which should be the experimental basis for the ontology developed within the project GlasDigital.
Although the slow crack growth in glass is dominated by stress-corrosion phenomena, it also should reflect the underlaying intrinsic fracture behavior controlled by glass chemistry and structure. To investigate such underlaying phenomena, crack growth velocity in alkali silicate glasses was measured in vacuum across 10 orders of magnitude with double cantilever beam technique. Measured and literature crack growth data were compared with calculated intrinsic fracture toughness data obtained from Young’s moduli and theoretical fracture surface energy. Data analysis reveals slight correlation with the packing density and significant deviations from the intrinsic brittle fracture behavior. These deviations do not follow simple compositional trends. Two opposing processes may explain this finding: a decrease in the apparent fracture surface energy due to stress-induced chemical changes at the crack tip and its increase due to energy dissipation during fracture.
Efforts towards digitalization in the material science and technology community have enhanced in the last years. In 2019 the German digitalization initiative platform „MaterialDigital“1 (MD) has been started. Numerous projects concerning digitalization, including the copper related project „KupferDigital“ (copper digital) have been initiated under the umbrella of MD. The initiative strives to
address numerous issues concerning data access, exchange, security, provenance and sovereignty. Heterogeneous data origin, storage and evaluation often result in problems concerning comparability and reproducibility of scientific and technological results. In many cases material data are recorded, but the methods of testing are insufficiently described, or such information is not communicated along with the raw data. The material data can also have numerous different formats such as paper printouts, pdfs, excel sheets or csv-files. Hence, gathering and integrating material data from different sources is challenging for potential users like materials scientists and engineers, especially if there are contradictory data where the reasons for contradictions is not clear due their vague description. In order to address these problems, data should comply to the so called „FAIR“ principle which calls for data to be findable, accessible, interoperable, and reusable (FAIR)2 and hence be accessible via so-called decentralized but interconnected data spaces. By using knowledge representation withontologies, data can be enriched with meaning and the methods of the testing procedures can be accurately provided. In this presentation we want to introduce our approach to such knowledge representation based on a high-throughput alloy development process for Cu-based alloys³ along with characterization techniques such as hardness testing and microstructural characterization (e.g. EBSD – Electron Backscattered Diffraction).
Kern des Projektes KupferDigital ist es, einen Demonstrator für ein digitales Datenökosystem zu erstellen, der der Digitalisierung der Materialforschung und der metallverarbeitenden Industrie als zukunftsfähige Plattform zur Verfügung stehen soll. Das Projekt KupferDigital entwickelt Methoden und Konzepte, um den Lebenszyklus am Beispiel von Kupfer – von der Erzgewinnung bis zum Recycling – digital zu erfassen. Grundlage ist die Entwicklung sogenannter Ontologien. Diese können als eine Art Wissensnetz verstanden werden. Sie dienen als gemeinsame Standards für die Beschreibung von Werkstoffen und technischen Vorgängen. Sie helfen bei der digitalen Erfassung von Prozessschritten sowie von Materialeigenschaften. Parallel dazu werden Konzepte für Datenstrukturen, die Speicherung und den Austausch von Werkstoffdaten über neu zu definierende Schnittstellen erarbeitet.
Über die Bereitstellung digitalisierter Lebenszyklen von Kupfer wird die Industrie bei der Pro-duktentwicklung befähigt, neue Werkstoffentwicklungen frühzeitig zu bewerten, beispielsweise unter dem Gesichtspunkt der Nachhaltigkeit. Kupfer kommt hier eine aktuelle Bedeutung zu, weil es für die digitale Transformation sowie die Energie- und Mobilitätswende von fundamentaler Bedeutung ist und somit von hohem gesellschaftlichem Wert. Die Projektziele sind sowohl auf weitere metallische Struktur- und Funktionswerkstoffe als auch auf andere Industriebereiche übertragbar.
Die Projektergebnisse werden im Rahmen der Aktivitäten der Innovationsplattform MaterialDigital allen Interessierten zur Verfügung gestellt.
3D-printed landing pads on the moon: Paving the road for large area sintering of lunar regolith.
A prerequisite for lunar exploration and beyond is the manufacturing of objects directly on the moon, given the extreme costs involved in the shipping of material from Earth. Looking at processes, raw materials, and energy sources, equipment will certainly have to be brought from Earth at the beginning. Available on the moon are lunar regolith as raw material and the sun as an energy source. One of the first steps towards the establishment of a lunar base is the creation of infrastructure elements, such as roads and landing pads.
We’ll introduce you to the ESA-project PAVER that demonstrates the sintering and melting of lunar regolith simulant material to produce large scale 3D printed elements that could be used during human and robotic lunar explorations.
Additive manufacturing methods such as laser powder bed fusion (LPBF) allow geometrically complex parts to be manufactured within a single step. However, as an aftereffect of the localized heat input, the rapid cooling rates are the origin of the large residual stress (RS) retained in as-manufactured parts. With a view on the microstructure, the rapid directional cooling leads to a cellular solidification mode which is accompanied by columnar grown grains possessing crystallographic texture. The solidification conditions can be controlled by the processing parameters and the scanning strategy. Thus, the process allows one to tailor the microstructure and the texture to the specific needs. Yet, such microstructures are not only the origin of the mechanical anisotropy but also pose metrological challenges for the diffraction-based RS determination. In that context the micromechanical elastic anisotropy plays an important role: it translates the measured microscopic strain to macroscopic stress. Therefore, it is of uttermost importance to understand the influence of the hierarchical microstructures and the texture on the elastic anisotropy of LPBF manufactured materials.
This study reveals the influence of the build orientation and the texture on the micro-mechanical anisotropy of as-built Inconel 718. Through variations of the build orientation and the scanning strategy, we manufactured specimens possessing [001]/[011]-, [001]-, and [011]/[111]-type textures. The resulting microstructures lead to differences in the macroscopic mechanical properties. Even further, tensile in-situ loading experiments during neutron diffraction measurements along the different texture components revealed differences in the microstrain response of multiple crystal lattice planes. In particular, the load partitioning and the residual strain accumulation among the [011]/[111] textured specimen displayed distinct differences measured up to a macroscopic strain of 10 %. However, the behavior of the specimens possessing [001]/[011]-and [001]-type texture was only minorly affected. The consequences on the metrology of RS analysis by diffraction-based methods are discussed.
Präsentation der Aktivitäten an der BAM im Bereich Additive Fertigung unter Mikrogravitationsbedingungen für Anwendungen im Weltraum beim Arbeitsgruppentreffen der AG Werkstoffe & Prozesse vom Netzwerk Space2Motion.
A main source of current challenges in materials science and engineering is the ever-increasing complexity in materials chemistry and processing resulting in complex microstructures, making the assessment of process-microstructure-property-performance relations difficult, even unmanageable. Here the computational materials science is facing the same situation. In this talk, I share a viewpoint that the complexities in chemistry, processing and microstructures can be circumscribed by integrating existing knowledges of bulk thermodynamics and kinetics to the unknown thermodynamics and kinetics of microstructure elements. To this end, I discuss several successful examples on grain boundary segregation engineering how this scientific advance can be conducted. A roadmap is proposed, beginning to form on generalizing the concept of phase diagrams.
Die technischen Möglichkeiten der robotischen Glasschmelzanlage der BAM werden vorgestellt.
Lithium-ion batteries (LIBs) are one technology to overcome the challenges of climate and energy crisis. They are widely used in electric vehicles, consumer electronics, or as storage for renewable energy sources. However, despite innovations in batteries' components like cathode and anode materials, separators, and electrolytes, the aging mechanism related to metallic aluminum current collector degradation causes a significant drop in their performance and prevents the durable use of LIBs. Glow-discharge optical emission spectroscopy (GD-OES) is a powerful method for depth-profiling of batteries' electrode materials. This work investigates aging-induced aluminum deposition on commercial lithium cobalt oxide (LCO) batteries' cathodes. The results illustrate the depth-resolved elemental distribution from the cathode surface to the current collector. An accumulation of aluminum is found on the cathode surface by GD-OES, consistent with results from energy-dispersive X-ray spectroscopy (EDX) combined with focused ion beam (FIB) cutting. In comparison to FIB-EDX, GD-OES allows a fast and manageable depth-profiling. Results from different positions on an aged cathode indicate an inhomogeneous aluminum film growth on the surface. The conclusions from these experiments can lead to a better understanding of the degradation of the aluminum current collector, thus leading to higher lifetimes of LIBs.
Die HÜTTE ist ein Kompendium und Nachschlagewerk für unterschiedliche Aufgabenstellungen. Durch Kombination der Einzeldisziplinen dieses Wissenskreises kann das multidisziplinäre Grundwissen für die verschiedenen Technikbereiche und Ingenieuraufgaben zusammengestellt werden.
Die HÜTTE enthält in drei Bänden - orientiert am Stand von Wissenschaft und Technik und den Lehrplänen der Technischen Universitäten und Hochschulen - die Grundlagen des Ingenieurwissens.
Band 1 enthält die mathematisch-naturwissenschaftlichen und allgemeinen Grundlagen.
The homogeneous introduction of organic additives is a prerequisite for good processability of ceramic powders during dry pressing. The addition of organic additives by wet route via ceramic slurries offers advantages over dry processing. The organic content can be reduced and a more homogeneous distribution of the additives on the particle surface is achieved. In addition to the measurements of zeta potential and viscosity, sedimentation analysis by optical centrifugation was also tested and successfully used to characterize the ceramic slurries and accurately evaluate of the suitability of different types, amounts, and compositions of organic additives.
Spray drying of well-stabilized slurries usually results in mostly hollow granules with a hard shell leading to sintered bodies with defects and reduced strength and density. By purposefully degrading the slurry stability after dispersion of the ceramic powder, the drying behavior of the granules in the spray drying process and thus the granule properties can be influenced. Destabilization of the slurry and thus partial flocculation was quantified by optical centrifugation. Spray drying of the destabilized alumina slurries resulted in "non-hollow" granules without the detrimental hard shell and thus improved granule properties.
Further improvement of the granules was achieved by installing ultrasonic atomization in the spray dryer. A narrower granule size distribution was achieved, which had a positive effect on, among other things, the flowability of the granules.
Specimens produced from this granules had fewer defects of smaller size, leading to better results for the density and strength of the sintered bodies. The observations made for alumina could be transferred to zirconia and as well to ZTA with 20 wt% zirconia.