Ingenieurwissenschaften und zugeordnete Tätigkeiten
Filtern
Dokumenttyp
- Zeitschriftenartikel (170)
- Vortrag (170)
- Beitrag zu einem Tagungsband (84)
- Posterpräsentation (19)
- Forschungsbericht (4)
- Dissertation (1)
- Forschungsdatensatz (1)
Schlagworte
- Laser beam welding (90)
- Additive Manufacturing (35)
- Additive manufacturing (35)
- Additive Fertigung (28)
- Laser metal deposition (24)
- Thermography (24)
- Numerical simulation (22)
- Microstructure (19)
- Solidification cracking (18)
- Numerical modeling (17)
- Laser implantation (14)
- Laserstrahlschweißen (14)
- Mechanical properties (14)
- Weld pool shape (14)
- Open science (13)
- DED (12)
- Hybrid laser-arc welding (12)
- Porosity (12)
- Process monitoring (12)
- TiB2 (12)
- Laser hybrid welding (10)
- Research data management (10)
- Surface texturing (10)
- Thermografie (10)
- Thick-walled steel (10)
- Deep penetration laser beam welding (9)
- Laser Metal Deposition (9)
- Laser welding (9)
- Ti-6Al-4V (9)
- Weld pool dynamics (9)
- AISI D2 (8)
- Digitalisierung (8)
- Element transport (8)
- Hybrid laser arc welding (8)
- Magnetic field (8)
- Numerical modelling (8)
- AM (7)
- Charpy impact toughness (7)
- Digitalization (7)
- Electromagnetic backing (7)
- High power laser beam welding (7)
- LMD (7)
- Laserhybridschweißen (7)
- Magnetohydrodynamics (7)
- Open data (7)
- Resistance spot welding (7)
- Solidification (7)
- Thermal cycles (7)
- Arc welding (6)
- Bulging effect (6)
- Deep penetration (6)
- Grain refinement (6)
- Laser Powder Bed Fusion (6)
- Laser-Pulver-Auftragschweißen (6)
- Partial penetration (6)
- Residual stress (6)
- Welding (6)
- Welding simulation (6)
- 3D printing (5)
- Artificial neural network (5)
- Critical strain (5)
- Direct Energy Deposition (5)
- Directed Energy Deposition (5)
- Duplex (5)
- End crater (5)
- Gründungsstrukturen (5)
- Hochfester Stahl (5)
- Hot cracking (5)
- Hybrid Laser Arc Welding (5)
- Keyhole mode welding (5)
- Laser energy distribution (5)
- Laser powder bed fusion (5)
- Laserimplantation (5)
- Liquid metal embrittlement (5)
- Numerical process simulation (5)
- Quality assurance (5)
- Ray tracing (5)
- Simulation (5)
- Stainless Steel (5)
- Thick-plate welding (5)
- WelDX (5)
- Widerstandspunktschweißen (5)
- X38CrMoV5-3 (5)
- 316L (4)
- 3D Druck (4)
- Additive Manufacturing (AM) (4)
- Auftragschweißen (4)
- Bulge effect (4)
- Computed Tomography (4)
- Crack (4)
- DED-Arc (4)
- Direct energy deposition (4)
- Directed energy deposition (4)
- Endkrater (4)
- Forschungsdatenmanagement (4)
- Gap bridgeability (4)
- Heat conduction (4)
- Highspeed-plasma-laser-cladding (4)
- Inconel 718 (4)
- Keyhole dynamics (4)
- Künstliche Intelligenz (4)
- L-PBF (4)
- Laser Powder Bed Fusion (L-PBF) (4)
- Liquid Metal Embrittlement (4)
- Low Cycle Fatigue (4)
- Mathematical modeling (4)
- Neutron diffraction (4)
- Offshore Windenergieanlagen (4)
- Oscillating magnetic field (4)
- ProMoAM (4)
- Process simulation (4)
- Rundnaht (4)
- Selective laser melting (SLM) (4)
- 9%Ni steel (3)
- AGIL (3)
- AlSi10Mg (3)
- Automatisierte Fertigung (3)
- Boundary element method (3)
- Bulge formation (3)
- Bulging (3)
- CT (3)
- Circumferential weld (3)
- Computed tomography (3)
- Cryogenic steel (3)
- Crystal branch development (3)
- Defokussierung (3)
- Deposition welding (3)
- Dimensional accuracy (3)
- Directed Enery Deposition (3)
- Dissimilar metal weld overlays (3)
- Edge quality (3)
- Electromagnetic Weld Pool Support (3)
- Electromagnetic forces (3)
- Electromagnetic weld pool support (3)
- Elektromagnetische Schmelzbadbeeinflussung (3)
- Elektromagnetische Schmelzbadunterstützung (3)
- Equivalent heat source (3)
- FGM (3)
- Fatigue (3)
- Friction stir welding (3)
- Full Penetration (3)
- Grain size (3)
- Hot stamping (3)
- Hot-Stamping (3)
- Infrared thermography (3)
- Joining dissimilar materials (3)
- Keyhole collapse (3)
- LME (3)
- LPA (3)
- Laser (3)
- Laser Beam Welding (3)
- Laser Pulver Auftragsschweißen (3)
- Laser beam melting (3)
- Laser powder bed fusion (L-PBF) (3)
- Leichtbau (3)
- Life Cycle Assessment (3)
- Mechanical mismatching (3)
- Melt pool dinamics (3)
- Mikrostruktur (3)
- Molten pool dynamics (3)
- Multi-physical modeling (3)
- Multi-physical modelling (3)
- Multispectral thermography (3)
- Online Process Monitoring (3)
- Oscillating vapor plume (3)
- Periodic solidification pattern (3)
- Prozesskette (3)
- Prozessmonitoring (3)
- Prozessüberwachung (3)
- Pufferschichten (3)
- Ray tracing method (3)
- Schweißen (3)
- Steel and aluminium (3)
- Submerged arc welding (3)
- TES (3)
- Temperature emissivity separation (3)
- Thermo-fluid flow (3)
- Thick Materials (3)
- Transient heat transfer (3)
- Umweltwirkungen (3)
- WAAM (3)
- Wire arc additive manufacturing (3)
- Ökobilanzierung (3)
- Überlappbereich (3)
- AISI 316L (2)
- Adaptives Schweißen (2)
- Advanced high strength steel (2)
- Advanced high strength steels (2)
- Aerosol measurements (2)
- Al/Mg alloys (2)
- Artungleiche Werkstoffe (2)
- Automatisierte schweißtechnische Fertigung (2)
- CFD-model (2)
- Coarse-grained heat-affected zone (2)
- Columnar crystal growth (2)
- Computed tomography (CT) (2)
- Condition monitoring (2)
- DED-EB (2)
- DED-LB (2)
- Data fusion (2)
- Data preparation (2)
- Dickblech (2)
- Digital transformation (2)
- Direct Laser Metal Deposition (2)
- Distortion (2)
- Dual phase steel (2)
- Duplex AISI 2205 (2)
- Duplex steels (2)
- EBAM (2)
- Electromagnetic support (2)
- Electron beam welding (2)
- Elektromagnetische Schmelzbadsicherung (2)
- Elektronenstrahlschweißen (2)
- Embedded electronics (2)
- End-crater (2)
- FE-model (2)
- Ferromagnetischer Stahl (2)
- Filler material distribution (2)
- Filler wire mixing (2)
- Finite element simulation (2)
- Flüssigmetallinduzierte Rissbildung (2)
- Full penetration (2)
- Fume (2)
- Funktionally Graded Material (2)
- Fügetechnologie (2)
- Hardness (2)
- Heat treatment (2)
- Heissrisse (2)
- High Temperature Testing (2)
- High-power laser (2)
- High-power laser beam (2)
- High-power laser beam welding (2)
- Hochleistungsschweißen (2)
- Hot crack (2)
- Hybrid welding (2)
- In situ strain (2)
- In-situ Monitoring (2)
- Keyhole mode laser beam welding (2)
- Korrosionsschutz (2)
- LCF (2)
- LPBF (2)
- Lack-of-fusion (2)
- Laser Metal Deposition (LMD) (2)
- Laser beam melting (LBM) (2)
- Laser beam welding (LBW) (2)
- Laser dispersing (2)
- Laser energy absorption (2)
- Laser metal deposition (LMD) (2)
- Laser-Hybridschweißen (2)
- Laser-metal-deposition (2)
- Laserpulverauftragschweißen (2)
- Lichtbogensensorik (2)
- Localized laser dispersing (2)
- Low heat input GMA welding (2)
- MHD (2)
- MSG-Engspaltschweißen (2)
- MSG-Schweißen (2)
- Matching ferritic welding electrode (2)
- Melt pool dynamics (2)
- Metal mixing (2)
- Misalignment of the edges (2)
- Model calibration (2)
- Molten pool (2)
- Molten pool behaviour (2)
- Moving mesh (2)
- Multiple reflections (2)
- NDT (2)
- Neuronales Netz (2)
- Neutron Diffraction (2)
- NiCrBSi (2)
- Nickel (2)
- Nickel alloys (2)
- Offshore wind (2)
- Optical Tomography (2)
- Optical flow (2)
- Optical measurement (2)
- Optical tomography (2)
- Optische Tomografie (2)
- Particle gas emission (2)
- Path planning (2)
- Penetration depth (2)
- Pipe manufacturing (2)
- Pipeline steel X120 (2)
- Plasma (2)
- Plasma-Transferred-Arc (2)
- Plasma-cutting (2)
- Plume (2)
- Powder Bed Fusion (2)
- Preheating (2)
- Presshärten (2)
- Process chain (2)
- Pulsed laser beam welding (2)
- RSW (2)
- Ray-tracing (2)
- Refill friction stir spot welding (2)
- Residual Stress (2)
- Residual stresses (2)
- SMAW (2)
- Schweißnahtbewertung (2)
- Selected Laser Melting (2)
- Selective Laser Melting (2)
- Selective Laser Melting (SLM) (2)
- Selektive-laser-melting (2)
- Ship building (2)
- Single pass welding (2)
- Solidification craking (2)
- Spatter (2)
- Stahl und Aluminium (2)
- Strain measurement (2)
- Strain rate (2)
- Superellipse (2)
- Superelliptic Lamé curves (2)
- Surface modification (2)
- Temperature distribution (2)
- Temperature field (2)
- Tensile Properties (2)
- Testing method (2)
- Thermo-capillary convection (2)
- Thermographie (2)
- Ti64 (2)
- TiAl5V4 (2)
- Titan (2)
- Titanium (2)
- Toughness (2)
- Tribologie (2)
- Tribology (2)
- Tungsten carbide (2)
- Turbulence (2)
- Ultrasonic vibration (2)
- Vaporization (2)
- Verfahrensvergleich (2)
- Wear resistance (2)
- Weld defects (2)
- Weld pool (2)
- Weld pool behavior (2)
- Weld pool geometry (2)
- Weld pool shape approximation (2)
- Welding thermal cycle (2)
- Wire electron beam additive manufacturing (2)
- Wärmenachbehandlung (2)
- Zinc coated steel (2)
- Zink (2)
- Zugeigenschaften (2)
- 9%Ni steel, (1)
- AC magnetic field (1)
- AHSS (1)
- AM feature integration (1)
- Acoustic Emission (1)
- Adaptive MSG-Lichtbogenprozesse (1)
- Adaptive MSG-Lichtbogenschweißprozesse (1)
- Adaptive control (1)
- Adaptive remeshing (1)
- Adaptive welding beam oscillation (1)
- Adative arc welding processes (1)
- Additive manufacturing (AM) (1)
- Advanced High-Strength Steel (AHSS) (1)
- Advanced high-strength steel (1)
- Advanced high-strength steels (1)
- Al-Mg-Si-Legierungen (1)
- Al/Ti dissimilar joints (1)
- AlMg0.7SiTiB filler wire (1)
- AlMgSi Legierungen (1)
- Alloy 247 (1)
- Alloy 718 (1)
- Aluminium-Druckguss (1)
- Aluminium-Druckgusslegierung (1)
- Aluminum alloys (1)
- Aluminum bronze (1)
- Analytical model (1)
- Analytical solution (1)
- Angle dependency (1)
- Anlagen (1)
- Arc sensor (1)
- Artificial Intelligence (1)
- Artificial intelligence (1)
- As-shielded arc welding (1)
- Aufgelöste Tragstrukturen (1)
- Auftriebskräfte (1)
- Austenitic welding electrode (1)
- Automated manufacturing (1)
- Automated welding (1)
- Automation (1)
- Automatisierte schweißtechniche Fertigung (1)
- Automobilindustrie (1)
- Automotive application (1)
- Beam oscillation (1)
- Beam oscillations (1)
- Bending test (1)
- Bewegtes Gitter (1)
- Bionik (1)
- Build-up strategy (1)
- Bulge (1)
- Bulging effects (1)
- CFD model (1)
- Calculation time (1)
- Carbon dioxide footprint (1)
- Centerline solidification cracking (1)
- Characterisation (1)
- Cimensional Accuracy (1)
- Circumferential welds (1)
- Clad steels (1)
- Clustering (1)
- Coarse grained heat affected zone (1)
- Computational fluid dynamics (1)
- Computer vision (1)
- Computertomografie (1)
- Control (1)
- Conventional Ni-based austenitic welding electrode (1)
- Convolutional neural network (1)
- Crack propagation (1)
- Cracking (1)
- Cracking mechanism (1)
- Crater (1)
- Creep behavior (1)
- Cryogenic Steel (1)
- Crystal Plasticity Modelling (1)
- Crystal plasticity (1)
- CuSn1 (1)
- Current density (1)
- DED-L (1)
- DED-arc (1)
- DIC (1)
- Damage prediction (1)
- Datenmanagement (1)
- Deep learning (1)
- Deep penetration laser beam welding; Keyhole stability (1)
- Defekte (1)
- Deformed geometry (1)
- Dendrite growth (1)
- Density measurement (1)
- Deposition rate (1)
- Design of experiments (1)
- Die-cast aluminum (1)
- Die-casted aluminum (1)
- Digital Image Correlation (1)
- Digital image correlation (1)
- Digitalisation (1)
- Digitization (1)
- Direct laser deposition (1)
- Directed Energy Depositio (1)
- Displacement (1)
- Dissimilar friction stir welding (1)
- Dissimilar joints (1)
- Dissimilar materials (1)
- Distortion simulation (1)
- Duktilität (1)
- Dwell-time (1)
- EBSD (1)
- Edge effects (1)
- Efficient modelling (1)
- Eindringprüfung (1)
- Electro-thermomechnical model (1)
- Electrode geometry (1)
- Electromagnetic (1)
- Electromagnetic field (1)
- Electromagnetic influence (1)
- Electromagnetic stirring (1)
- Electromagnetic supported degassing (1)
- Electromagnetic weld pool support system (1)
- Electron beam (1)
- Elektonenstrahlschweißen (1)
- Elektromagnetische Badstütze (1)
- Elektromagnetische Porenreduktion (1)
- Elektromagnetische Schmelzbadstütze (1)
- Elektromagnetsiche Schmelzbadbeeinflussung (1)
- Elemenet transport (1)
- Element distribution (1)
- Emisssivity (1)
- Energy parameters of the arc (1)
- Environment (1)
- Environmental impact categories (1)
- Equivalent stress concentration factors (1)
- Equivalent volumetric heat source (1)
- Ermüdungsfestigkeit (1)
- FEM (1)
- Fatigue tests (1)
- Ferritic welding electrode (1)
- Ferromagnetic steels (1)
- Festigkeit (1)
- Fiber laser (1)
- Filler material (1)
- Filler wire (1)
- Fine-grained Steel (1)
- Finite Element Method (1)
- Finite element method (1)
- Finite element method (FEM) (1)
- Flange width (1)
- Fließfähigkeit (1)
- Flüssigmetallversprödung (1)
- Formgedächtnislegierungen (1)
- Fresnel reflection (1)
- Functionally Graded Materials (1)
- Fusion Zone (1)
- Fusion welding (1)
- Fusion zone (1)
- Fusion zone profile (1)
- Fusion zone size (1)
- Fusion zone, nickel alloys (1)
- Fügequalität (1)
- Füllgradregelung (1)
- GMA welding (1)
- GMR sensors (1)
- GTAW (1)
- Galvanized steel (1)
- Gap bridging (1)
- Gas shielded arc welding (1)
- General analytical solutions (1)
- Gleeble (1)
- Gleeble testing (1)
- Grade S960QL steel (1)
- Grain structure (1)
- Greens function method (1)
- HSLA (1)
- Hall-Flow (1)
- Hardly separable problem (1)
- Heat Input (1)
- Heat Treatment (1)
- Heat flow (1)
- Heat generation (1)
- Heat input (1)
- Heat saturation function (1)
- Heat source modeling (1)
- Heat source models (1)
- Heißrisse (1)
- Heißzug (1)
- High brightness (1)
- High power (1)
- High process speeds (1)
- High speed laser cladding (1)
- High strength AlMgSi aluminium alloys (1)
- High strength steels (1)
- High-Power Welding (1)
- High-power fibre laser (1)
- High-stength aluminium alloys (1)
- High-strength fine-grain steels (1)
- High-strength fine-grained steels (1)
- High-strength low-alloy steel (1)
- High-strength steel sheets (1)
- Highspeed plasma (1)
- Hochleistungslaserstrahlschweißen (1)
- Hohlprofilknoten (1)
- Hold time (1)
- Hot Cracks (1)
- Hot cracking test (1)
- Hot working tool steel (1)
- Hybrid Laser-Arc Welding (1)
- Hybrid components (1)
- Hybrid-laser-arc welding (1)
- Hybridschweißen (1)
- Hydrostatic and arc pressure exceed the Laplace pressure (1)
- IR-Spektroskopie (1)
- IR-spectroscopy (1)
- Impact absorbed energy (1)
- Implementierung (1)
- In situ Monitoring (1)
- In-situ (1)
- In-situ Process Monitoring (1)
- Inconel 625 (1)
- Inconel 939 (1)
- Industrial and Manufacturing Engineering (1)
- Infrared Thermography (1)
- Instumented indentation test (1)
- Integrated alignment features (1)
- Inter layer time (1)
- Joining technology (1)
- KI (1)
- Kaltzähe Stähle (1)
- Karosseriebau (1)
- Kerbspannungskonzept (1)
- Keyhole (1)
- Keyhole stability (1)
- Keyhole welding (1)
- Kl (1)
- Knotenweise Zwangsbedingungen (1)
- Kriechen (1)
- Kurz- und Langriss-Ermüdungsbruchmechanik (1)
- Körperschall (1)
- Künstliche Neuronale Netze (1)
- Lamé curves (1)
- Lamé curves approximation (1)
- Laser Metal Deposition; Laser Beam Welding; Duplex; Stainless Steel (1)
- Laser cladding (1)
- Laser cutting (1)
- Laser keyhole welding (1)
- Laser melting (1)
- Laser powder-based directed energy deposition (1)
- Laser surface texturing (1)
- Laser surfacing (1)
- Laser- und Lichtbogenenergie (1)
- Laser-Pulver-Auftragschweißen (LPA) (1)
- Laser-Pulver-Auftragschweißen; Laserstrahlschweißen, Duplex, Pufferschichten (1)
- Laser-beam welding, (1)
- Laser-cutting (1)
- Laser-hybrid welding (1)
- Laser-metal-depositon (1)
- Laser-plasma hybrid (1)
- Laserauftragschweißen (1)
- Laserdispergieren (1)
- Laserstrahl-Hybridschweißen (1)
- Laserstrahlhybridschweißen (1)
- Laserstrahlschmelzen (1)
- Leichtbauprinzipien (1)
- Life Cycle Assessment (LCA) Fusion welding (1)
- Life Cycle Assessment (LCA) Impact categories (1)
- Life Cycle Assessment (LCA) Schweißprozesse (1)
- Life Cycle Assessment (LCA) Umweltwirkungen (1)
- Life cycle assessment (1)
- Lightweight principles (1)
- Liquid Metal Embrittlement (LME) (1)
- Local critical strain (1)
- Local fatigue spproaches (1)
- Localized Laser Dispersing (1)
- Lorentz force (1)
- Low Temperature Toughness (1)
- Low carbon steel (1)
- Low cycle fatigue (1)
- Low feed rates (1)
- Low heat input Gma welding (1)
- Low-Cycle-Fatigue (1)
- MAG Prozesssteuerung (1)
- MWIR (1)
- Machine learning (1)
- Magnesium Alloy (1)
- Magnesium alloy (1)
- Magnetic bath support (1)
- Magnetic stray field (1)
- Magnetohydrodynamic technology (1)
- Magnetohydrodynamics (MHD) (1)
- Magnettechnik (1)
- Maritime Components (1)
- Matching ferritic filler metal (1)
- Material modeling (1)
- Material transport (1)
- Materialmodellierung (1)
- Mechanical Properties (1)
- Mechanical anisotropy (1)
- Mechanical properties of the joints (1)
- Mechanical property (1)
- Mechanical-technological properties (1)
- Mechanisch technologische Kennwerte (1)
- Mechanische Eigenschaften (1)
- Melt pool behaviour (1)
- Melt pool defects (1)
- Melt pool depth (1)
- Melting (1)
- Metal (1)
- Metallic vapour plume (1)
- Metallpulver (1)
- Micro computed tomography (1)
- Micro-computed tomography (1)
- Microstructure Tensile strength (1)
- Microstructure characterisation (1)
- Mikro-Computertomographie (1)
- Misalignment of edges (1)
- Mittelrippendefekt (1)
- Mixing behavior (1)
- Model order reduction (1)
- Modellierung (1)
- Multi - physical modeling (1)
- Multi-materials joining (1)
- NIR (1)
- Narrow gap welding (1)
- Narrow-gap welding (1)
- NbC (1)
- Necking (1)
- Neural networks (1)
- Ni-based austenitic filler metal (1)
- Ni-based austenitic welding electrode (1)
- Ni-based superalloy (1)
- NiTi-Legierungen (1)
- Nickel-based superalloy (1)
- Nickelbasis-Superlegierungen (1)
- Non-destructive Materials (1)
- Non-destructive testing (1)
- Normen (1)
- Notch stress approach (1)
- Novel metrology (1)
- Novel optical metrology (1)
- Numerical Simulation (1)
- Numerical analysis (1)
- Numerical investigation (1)
- Numerical simulations (1)
- Numerical welding simulation (1)
- Numerical welding simulations (1)
- Numerische ISmulation (1)
- Numerische Simulation (1)
- Oberflächenmessung (1)
- Oberflächenstrukturierung (1)
- Offshore Windenergie (1)
- Offshore wind turbines (1)
- Open Data (1)
- Open source (1)
- OpenScience (1)
- Optical Emission Spectroscopy (1)
- Optical emission spectroscopy (1)
- Optical measurement technique (1)
- Optical measurment technique (1)
- Optische Emissionsspektroskopie (1)
- Optische Emissionsspektroskopie (OES) (1)
- Oszillierendes Magnetfeld (1)
- Parabolic flight (1)
- Partial penetration laser hybrid welding (1)
- Partial penetration welding (1)
- Pearlitic microstructure (1)
- Phase field method (1)
- Pipe Welding (1)
- Pipe weld preparation (1)
- Pipeline (1)
- Pipeline steel of grade X120 (1)
- Plane crystalization (1)
- Plasma cutting (1)
- Plasma-cut samples (1)
- Plasma-transferred-arc (1)
- Plastic deformation (1)
- Plastic material flow (1)
- Plume heating (1)
- Pool dimensions (1)
- Porenreduktion (1)
- Porosity defect (1)
- Porosity defects (1)
- Porosity reduction (1)
- Porosität (1)
- Post-weld heat treatment (1)
- Powder Analysis (1)
- Powder bed fusion of metals using a laser beam (1)
- Ppreheating temperature (1)
- Precipitation hardening aluminum alloys (1)
- Preheatin (1)
- Primär- und Sekundärspannungen (1)
- Process development (1)
- Profilvermessung (1)
- Proper generalized decomposition (1)
- Prozessregelung (1)
- Prozesssimulation (1)
- Prüfverfahren (1)
- Quality control (1)
- Qualität (1)
- Qualitätssicherung (1)
- Radiological inspections (1)
- Rail tracks (1)
- Ray teacing (1)
- Ray-tracing methods (1)
- Recycling (1)
- Reduced Order Model (1)
- Reduced order modelling (1)
- Reference data (1)
- Research data (1)
- Resistance Spot Welding (RSW) (1)
- Retained Austenite (1)
- Ringversuch (1)
- Rundnähte (1)
- SLM (1)
- SLM printed plasma torch (1)
- SS316L alloy (1)
- SWIR (1)
- Safety (1)
- Schallemission (1)
- Schallemissionsanalyse (SEA) (1)
- Schmelzbadstütze (1)
- Schutzgas (1)
- Schutzgasschweißen (1)
- Schweißdatenmanagement (1)
- Schweißeigenspannungen (1)
- Schweißeigenspannungs-Tiefen-Profile (1)
- Schweißeignung (1)
- Schweißen von kaltzähen Stählen (1)
- Schweißnahtgeometrie (1)
- Schweißprozesse (1)
- Schweißsimulation (1)
- Schweißstruktursimulation (1)
- Schweißtechnik (1)
- Schweißunregelmäßigkeiten (1)
- Seam geometry (1)
- Secondary heat source (1)
- Selective laser beam melting (1)
- Sensor (1)
- Sensorik (1)
- Shielding gas (1)
- Shipbuilding steel (1)
- SimCoLas (1)
- Single-pass welding (1)
- Software (1)
- Solidification behaviour (1)
- Stabilität von Eigenspannungen (1)
- Stainless steel (1)
- Stainless steels (1)
- Standardisation (1)
- Statistische Versuchsplanung (1)
- Steady-state weld pool (1)
- Steel (1)
- Steel and Al (1)
- Strain fields prediction (1)
- Strain-rate (1)
- Stress-strain behavior (1)
- Structural steel (1)
- Superalloy (1)
- Support structures (1)
- Surface cracks (1)
- TIG welding (1)
- TIG-welding (1)
- TaC (1)
- Tantalum carbide (1)
- Technical crack detection (1)
- Temperature behavior (1)
- Temperature dependent absorption (1)
- Tensile properties (1)
- Tensile resistance spot welding experiment (1)
- Tensile strength (1)
- Tensile testing (1)
- Texture (1)
- Themral cycles (1)
- Thermal analysis (1)
- Thermal stress analysis (1)
- Thermal-fluid-structure coupling model (1)
- Thermo-fluid dynamics (1)
- Thermoelastic effect (1)
- Thermograhy (1)
- Thermoplastic effect (1)
- Thick materials (1)
- Thick plate welding (1)
- Thick plates (1)
- Thick steel plates (1)
- Thick-Walled Steel (1)
- Thick-walled Structures (1)
- Thick-walled steels (1)
- Thick-walled structures (1)
- Thin steel plates (1)
- Three-dimensional crystallization (1)
- TiC (1)
- TiN (1)
- Time over threshold (1)
- Titandiborid (1)
- Titanium alloy (1)
- Tool service life (1)
- Tool steel (1)
- Tool-workpiece interaction (1)
- Transformable steels (1)
- Tubular X-joints (1)
- Tubular joints (1)
- Turbine components (1)
- Two-dimensional solidification (1)
- Two-run welding technique (1)
- Unterpulverschweißen (1)
- V-notch impact toughness (1)
- Vapor recondensation (1)
- Vernetzte Produktion (1)
- Verzug (1)
- Viscoplasticity (1)
- Void defect formation mechanism (1)
- WEBAM (1)
- Weld end crater (1)
- Weld imperfections (1)
- Weld pool modeling (1)
- Weld root (1)
- Weld seam geometry (1)
- Weldability (1)
- Welding Current (1)
- Welding Simulation (1)
- Welding parameter (1)
- Welding process simulation (1)
- Weldx (1)
- Widerstandpunktschweißen (1)
- Windkraftanlagen (1)
- Wineglass shape (1)
- Wire Electron Beam Additive Manufacturing (1)
- Wire feed laser beam welding (1)
- Wire-based additive manufacturing (1)
- Wärmebehandlung (1)
- X-ray Diffraction (1)
- X-ray computed tomography (1)
- X-ray diffraction (1)
- X153CrMoV12 (1)
- X8Ni9 (1)
- Zinc (1)
- Zinkbeschichtung (1)
- Zwischenlagenzeit (1)
- deposition welding (1)
- digital image correlation (1)
- dual phase steel (1)
- highspeed plasma laser cladding (1)
- keyhole dynamics (1)
- laser energy absorption (1)
- laser energy distribution (1)
- laser hybrid welding (1)
- molten pool (1)
- numerical modeling (1)
- resistance spot welding (1)
- thermal cycles (1)
- thick plate welding (1)
- µ-gravity (1)
- Äquivalente Spannungskonzentrationsfaktoren (1)
- Äquivalente Wärmequelle (1)
- Ökonomische und ökologische Vorteile (1)
- ГИДРОДИНАМИКА (1)
- КОНВЕКЦИЯ (1)
- ЛАЗЕРНАЯ СВАРКА (1)
- МЕТОД КОНЕЧНЫХ ЭЛЕМЕНТОВ (1)
- СВАРОЧНАЯ ВАННА (1)
- ТЕМПЕРАТУРНОЕ ПОЛЕ (1)
- ТЕПЛОПРОВОДНОСТЬ (1)
- ЧИСЛЕННОЕ МОДЕЛИРОВАНИЕ (1)
- кратер шва (1)
- кристаллизация, (1)
- плавление, (1)
- сварочная ванна (1)
- температурное поле (1)
- функция теплонасыщения (1)
Organisationseinheit der BAM
- 9.3 Schweißtechnische Fertigungsverfahren (449) (entfernen)
Eingeladener Vortrag
- nein (170)
Additive manufacturing (AM) opens the route to a range of novel applications.However, the complexity of the manufacturing process poses a challenge for the production of defect-free parts with a high reliability. Since process dynamics and resulting microstructures of AM parts are strongly influenced by the involved temperature fields, thermography is a valuable tool for process surveillance. The high process temperatures in metal AM processes allow one to use cameras usually operating in the visible spectral range to detect the thermally emitted radiation from the process. In our work, we compare the results of first measurements during the manufacturing processes of a commercial laser metal deposition (LMD) setup and a laser beam melting (LBM) setup using a MWIR camera with those from a VIS high-speed camera with band pass filter in the NIR range.
Additive manufacturing (AM) offers a range of novel applications. However, the manufacturing process is complex and the production of defect-free parts with a high reliability is still a challenge. Thermography is a valuable tool for process surveillance, especially in metal AM processes. The high process temperatures allow one to use cameras usually operating in the visible spectral range. Here, we compare the results of first measurements during the manufacturing process of a commercial laser metal deposition (LMD) setup using a MWIR camera with those from a VIS high-speed camera with band pass filter in the NIR range.
Aktuell werden Prozessmonitoringsysteme in der additiven Fertigung (AM) zur Überwachung der Energiequelle, des Bauraums, des Schmelzbades und der Bauteilgeometrie zumindest im metallbasierten AM schon kommerziell angeboten. Weitere Verfahren aus den Bereichen der Optik, Spektroskopie und zerstörungsfreien Prüfung werden in der Literatur als geeignet für die in-situ Anwendung bezeichnet, es finden sich aber nur wenige Berichte über konkrete Umsetzungen in die Praxis.
Die Bundesanstalt für Materialforschung und -prüfung hat ein neues Projekt gestartet, dessen Ziel die Entwicklung von Verfahren des Prozessmonitorings zur in-situ Bewertung der Qualität additiv gefertigter Bauteile in AM-Prozessen mit Laser- bzw. Lichtbogenquellen ist. Verschiedene Verfahren der zerstörungsfreien Prüfung, wie Thermografie, optische Tomografie, optische Emissionsspektroskopie, Wirbelstromprüfung und Laminografie werden in verschiedenen AM-Prozessen zum Einsatz gebracht und die Ergebnisse fusioniert. Die evaluierten Ergebnisse werden mit Referenzverfahren wie Computertomografie und Ultraschall-Tauchtechnik verglichen. Ziel ist eine deutliche Reduzierung aufwändiger und zeitintensiver, zerstörender oder zerstörungsfreier Prüfungen nach der Fertigung des Bauteiles und zugleich eine Verringerung von Ausschussproduktion.
Hier wird das Projekt als Ganzes vorgestellt und der Fokus auf verschiedene Methoden der Temperaturmessung mit Hilfe der Thermografie gelegt. Anforderungen an die Messtechnik für verschiedene AM-Systeme werden diskutiert und erste experimentelle Ergebnisse werden präsentiert.
Aktuell werden Prozessmonitoringsysteme in der additiven Fertigung (AM) zur Überwachung der Energiequelle, des Bauraums, des Schmelzbades und der Bauteilgeometrie zumindest im metallbasierten AM schon kommerziell angeboten. Weitere Verfahren aus den Bereichen der Optik, Spektroskopie und zerstörungsfreien Prüfung werden in der Literatur als geeignet für die in-situ Anwendung bezeichnet, es finden sich aber nur wenige Berichte über konkrete Umsetzungen in die Praxis.
Die Bundesanstalt für Materialforschung und -prüfung hat ein neues Projekt gestartet, dessen Ziel die Entwicklung von Verfahren des Prozessmonitorings zur in-situ Bewertung der Qualität additiv gefertigter Bauteile in AM-Prozessen mit Laser- bzw. Lichtbogenquellen ist. Verschiedene Verfahren der zerstörungsfreien Prüfung, wie Thermografie, optische Tomografie, optische Emissionsspektroskopie, Wirbelstromprüfung und Laminografie werden in verschiedenen AM-Prozessen zum Einsatz gebracht und die Ergebnisse fusioniert. Die evaluierten Ergebnisse werden mit Referenzverfahren wie Computertomografie und Ultraschall-Tauchtechnik verglichen. Ziel ist eine deutliche Reduzierung aufwändiger und zeitintensiver, zerstörender oder zerstörungsfreier Prüfungen nach der Fertigung des Bauteiles und zugleich eine Verringerung von Ausschussproduktion.
Hier wird das Projekt als Ganzes vorgestellt und der Fokus auf verschiedene Methoden der Temperaturmessung mit Hilfe der Thermografie gelegt. Anforderungen an die Messtechnik für verschiedene AM-Systeme werden diskutiert und erste experimentelle Ergebnisse werden präsentiert.
The project ProMoAM is presented. The goal of the project is to evaluate which NDT techniques or combination of techniques is suited for in-situ quality assurance in additive manufacturing of metals. To this end, also 3d-data fusion and visualization techniques are applied. Additional ex-situ NDT-techniques are used as references for defect detection and quantification. Feasability studies for NDT-techniques that are presently not applicable for in-situ use are performed as well.
The presentation gives a brief overview of the whole project and the different involved NDT-techniques.
For metal-based additive manufacturing, sensors and measuring systems for monitoring of the energy source, the build volume, the melt pool and the component geometry are already commercially available. Further methods of optics, spectroscopy and non-destructive testing are described in the literature as suitable for in-situ application, but there are only a few reports on practical implementations.
Therefore, a new BAM project aims to develop process monitoring methods for the in-situ evaluation of the quality of additively manufactured metal components. In addition to passive and active thermography, this includes optical tomography, optical emission and absorption spectroscopy, eddy current testing, laminography, X-ray backscattering and photoacoustic methods. These methods are used in additive manufacturing systems for selective laser melting, laser metal deposition and wire arc additive manufacturing. To handle the sometimes huge amounts of data, algorithms for efficient preprocessing are developed and characteristics of the in-situ data are extracted and correlated to defects and inhomogeneities, which are determined using reference methods such as computer tomography and metallography. This process monitoring and fusion of data of different measurement techniques should result in a significant reduction of costly and time-consuming, destructive or non-destructive tests after the production of the component and at the same time reduce the production of scrap.
Here, first results of simultaneous measurements of optical emission spectroscopy and thermography during the laser metal deposition process using 316L as building material are presented. Temperature values are extracted from spectroscopic data by fitting of blackbody emission spectra to the experimental data and compared with results from a thermographic camera. Measurements with and without powder flow reveal significant differences between welding at a pristine metal surface and previously melted positions on the build plate, illustrating the significant influence of the partial oxidation of the surface during the first welding process on subsequent welding. The measurement equipment can either be mounted stationary or following the laser path. While first results were obtained in the stationary mode, future applications for online monitoring of the build of whole parts in the mobile mode are planned.
This research was funded by BAM within the focus area Material.
Additive manufacturing of metals offers the opportunity to build parts with a high degree of complexity without additional costs, opening a new space for design optimization. However, the processes are highly complex and due to the rapid thermal cycles involved, high internal stresses and peculiar microstructures occur, which influence the parts mechanical properties. To systematically examine the formation of internal stresses and the microstructure, in-process spatially resolved measurements of the part temperature are needed. If the emissivity of the inspected part is known, its thermodynamic temperature can be reconstructed by a suited radiometric model. However, in additive manufacturing of metals, the emissivity of the part surface is strongly inhomogeneous and rapidly changing due to variations of, e.g., the degree of oxidation, the material state and temperature. Thus, here, the applicability of thermography in the determination of thermodynamic temperatures is limited. However, measuring the process thermal radiation at different wavelengths simultaneously enables one to separate temperature and emissivity spatially resolved to obtain further insight into the process. Here, we present results of an initial study using multispectral thermography to obtain real temperatures and emissivities in the powderfree LMD process.
Due to the rapid thermal cycles involved in additive manufacturing of metals, high internal stresses and peculiar microstructures occur, which influence the parts mechanical properties. To systematically examine their formation, in-process measurements of the temperature are needed. Since the part emissivity is strongly inhomogeneous and rapidly changing in the process, the applicability of thermography for the determination of thermodynamic temperatures is limited. Measuring the thermal radiation in different wavelengths simultaneously, temperature and emissivity can be separated. Here, we present results of a preliminary study using multispectral thermography to obtain real temperatures and emissivities in directed energy deposition (DED) processes.
Thermography is one on the most promising techniques for in-situ monitoring for metal additive manufacturing processes. The high process dynamics and the strong focus of the laser beam cause a very complex thermal history within the produced specimens, such as multiple heating cycles within single layer expositions. This complicates data interpretation, e.g., in terms of cooling rates. A quantity that is easily calculated is the time a specific area of the specimen is at a temperature above a chosen threshold value (TOT). Here, we discuss variations occurring in time-over-threshold-maps during manufacturing of a defect free cuboid specimen.
In-situ Prozessüberwachung in der additiven Fertigung von Metallen mittels optischer Verfahren
(2020)
Einer der aussichtsreichsten Ansätze, die Qualität und Sicherheit der gefertigten Teile in der metallbasierten additiven Fertigung (AM) zu erhöhen und die Notwendigkeit aufwändiger und zeitintensiver, zerstörender oder zerstörungsfreier Prüfungen (ZfP) nach der Fertigung zu verringern, liegt in dem Einsatz von in-situ Prozessüberwachungstechniken. Bereits jetzt werden erste Messsysteme zur Kontrolle der Energiequelle, des Bauraums, des Schmelzbades und der Bauteilgeometrie kommerziell angeboten. Weitere ZfP Verfahren, wie z.B. die aktive und passive Thermografie, werden in der Literatur als geeignet für die in-situ Anwendung angesehen, allerdings gibt es noch wenig konkrete praktische Umsetzungen, da die Möglichkeiten und individuellen Grenzen dieser Methoden, angewendet auf AM, noch nicht ausreichend erforscht sind. Aus diesem Grund verfolgt die BAM mit dem Projekt „Process Monitoring of AM“ (ProMoAM) im Themenfeld Material das Ziel, Verfahren des Prozessmonitorings zur in-situ Bewertung der Qualität additiv gefertigter Metallbauteile weiterzuentwickeln.
Im Beitrag wird zunächst das Projekt vorgestellt und anschließend der Fokus auf eine Messserie gelegt, in der Probekörper aus dem austenitischen Edelstahl 316L mit lokal variierenden Prozessparametern mittels selektiven Laserschmelzen (L-PBF) aufgebaut wurden. Der Bauprozess wurde hierbei durch das maschineneigene, koaxial arbeitende Photodiodensystem (Melt-Pool-Monitoring), einer Mittelwellen-Infrarotkamera und einer optischen Tomografiekamera im sichtbaren Wellenlängenbereich (Langzeitbelichtung für die Dauer eines Lagenaufbaus mit einer CMOS-Kamera mit hoher Ortsauflösung) simultan überwacht. Als Referenz für diese Methoden wurden die Probekörper mittels Computertomografie untersucht. Für die dabei anfallenden teils großen Datenmengen wurden Algorithmen für ein effizientes Preprocessing entwickelt. Es wurden Merkmale der Messdaten in Korrelation zu Fehlern und Inhomogenitäten extrahiert, welche für die einzelnen Methoden vergleichend vorgestellt und diskutiert werden.