5 Werkstofftechnik
Filtern
Dokumenttyp
- Forschungsdatensatz (22) (entfernen)
Sprache
- Englisch (22) (entfernen)
Referierte Publikation
- nein (22) (entfernen)
Schlagworte
- Mechanical testing (4)
- Ontology (4)
- Shear modulus (4)
- Young's modulus (4)
- Additive manufacturing (3)
- Aging (3)
- Aluminium alloy (3)
- Creep (3)
- Elastic modulus (3)
- CeO2 (2)
- Ceria (2)
- Copper alloys (2)
- Dataset (2)
- Digitalization (2)
- Nano powder (2)
- Stress relaxation (2)
- Tensile test (2)
- AISI 316L (1)
- Al2CuMg (1)
- Brinell hardness (1)
- CLS (1)
- Charpy test (1)
- Crack growth (1)
- Creep-fatigue (1)
- DLS (1)
- Data Interoperability (1)
- Data Management (1)
- Data Structures (1)
- Data analysis (1)
- Data format (1)
- Data management (1)
- Digital representation (1)
- Dwell-Fatigue (1)
- EBSD (1)
- EN AW 2618A a (1)
- EN AW-2618A (1)
- Elastic microstructure (1)
- Electron energy (1)
- Energy distribution (1)
- Environmental Stress Cracking (1)
- FAIR data (1)
- FNCT (1)
- Full-Notch Creep Test (1)
- Full-notch creep test (1)
- Hardness test (1)
- IN718 (1)
- Kikuchi pattern (1)
- Knowledge Representation (1)
- Low-cycle fatigue. (1)
- Metallic glasses (1)
- Microstructural characterization (1)
- Microstructure analysis (1)
- Nanoindentation (1)
- Nickel-base alloy (1)
- Nimonic 75 (1)
- PE-HD (1)
- PMD Core Ontology (1)
- Particle size (1)
- Plattform MaterialDigital (1)
- Polyethylene (1)
- Radii distribution (1)
- Reference data (1)
- Reference material BCR-425 (1)
- Refractory high entropy alloys (1)
- Round Robin (1)
- S-phase (1)
- S355 steel sheet (1)
- Scanning electron microscopy (1)
- Screening method (1)
- Semantic Web Technologies (1)
- Semantic Web technologies (1)
- Simulation (1)
- Small-angle Scattering (1)
- Strength (1)
- Structured Data (1)
- TEM (1)
- Tempered martensite-ferritic steel (1)
- Tensile Test (1)
- Tensile testing (1)
- Ti-6Al-4V (1)
- Transmission electron microscopy (1)
- VSSA (1)
- Volume specific surface area (1)
- Wet dispersion (1)
Organisationseinheit der BAM
- 5 Werkstofftechnik (22) (entfernen)
This is the stable version of the full-notch creep test ontology (OntoFNCT) that ontologically represents the full-notch creep test. OntoFNCT has been developed in accordance with the corresponding test standard ISO 16770:2019-09 Plastics - Determination of environmental stress cracking (ESC) of polyethylene - Full-notch creep test (FNCT).
The OntoFNCT provides conceptualizations that are supposed to be valid for the description of full-notch creep tests and associated data in accordance with the corresponding test standard. By using OntoFNCT for storing full-notch creep test data, all data will be well structured and based on a common vocabulary agreed on by an expert group (generation of FAIR data) which is meant to lead to enhanced data interoperability. This comprises several data categories such as primary data, secondary data and metadata. Data will be human and machine readable. The usage of OntoFNCT facilitates data retrieval and downstream usage. Due to a close connection to the mid-level PMD core ontology (PMDco), the interoperability of full-notch creep test data is enhanced and querying in combination with other aspects and data within the broad field of materials science and engineering (MSE) is facilitated.
The class structure of OntoFNCT forms a comprehensible and semantic layer for unified storage of data generated in a full-notch creep test including the possibility to record data from analysis and re-evaluation. Furthermore, extensive metadata allows to assess data quality and reliability. Following the open world assumption, object properties are deliberately low restrictive and sparse.
KupferDigital mechanical testing datasets: Stress relaxation and low-cycle fatigue (LCF) tests
(2024)
The KupferDigital project deals with the development of a data ecosystem for digital materials research on the basis of ontology-based digital representations of copper and copper alloys. This document provides exemplary mechanical testing datasets for training the developed KupferDigital infrastructures. Different types of cast copper alloys were provided for this research and their mechanical testing (stress relaxation and low-cycle fatigue) was performed in the accredited materials testing laboratory, while the test results were reported according to the DIN/ISO standards and attached with the maximum possible metadata about the sample history, equipment, and calibration. The attached content file consisted of the obtained primary raw testing data as well as the secondary datasets of these tests containing the detailed metadata of mechanical testing methods. Such test data files are processed by the KupferDigital digital tools to be converted to standardized machine-readable data files.
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.
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.
The elastic properties (Young's modulus, shear modulus) of Ni-based alloy Inconel IN718 were investigated between room temperature and 800 °C in an additively manufactured variant (laser powder bed fusion, PBF‑LB/M) and from a conventional process route (hot rolled bar). The moduli were determined using the dynamic resonance method. The data set includes information on processing parameters, heat treatments, grain size, specimen dimensions and weight, Young’s and shear modulus as well as their measurement uncertainty.
The dataset was generated in an accredited testing lab using calibrated measuring equipment. The calibrations meet the requirements of the test procedure and are metrologically traceable. The dataset was audited as BAM reference data.
The elastic properties (Young's modulus, shear modulus) of austenitic stainless steel AISI 316L were investigated between room temperature and 900 °C in an additively manufactured variant (laser powder bed fusion, PBF‑LB/M) and from a conventional process route (hot rolled sheet). The moduli were determined using the dynamic resonance method. The data set includes information on processing parameters, heat treatments, grain size, specimen dimensions and weight, Young’s and shear modulus as well as their measurement uncertainty.
The dataset was generated in an accredited testing lab using calibrated measuring equipment. The calibrations meet the requirements of the test procedure and are metrologically traceable. The dataset was audited as BAM reference data.
Particle size determination of a commercially available CeO2 nano powder - SOPs and reference data
(2023)
Compilation of detailed SOPs for characterization of a commercially available CeO2 nano powder including
- suspension preparation (indirect and direct sonication),
- particle size determination (Dynamic Light Scattering DLS and Centrifugal Liquid Sedimentation CLS) with reference data, respectively.
For sample preparation and analysis by Scanning Electron Microscopy (SEM) of this powder see related works (submitted, coming soon).
The dataset provided in this repository comprises data obtained from a series of full-notch creep tests (FNCT) performed on selected high-density polyethylene (PE-HD) materials (for further details, see section 1 Materials in this document) in accordance with the corresponding standard ISO 16770.
The FNCT is one of the mechanical testing procedures used to characterize polymer materials with respect to their environmental stress cracking (ESC) behavior. It is widely applied for PE-HD materials, that are predominantly used for pipe and container applications. It is based on the determination of the time to failure for a test specimen under constant mechanical load in a well-defined and temperature controlled liquid environment. The test device used here also allows for continuous monitoring of applied force, specimen elongation and temperature.