PMD Tensile Test Ontology

Tensile Test Ontology (TTO)

This is the release of the Tensile Test Ontology (TTO) 3.0.0.
The ontology has been developed within the framework of the joint project Platform MaterialDigital (PMD) and provides a semantic, machine-readable representation of tensile testing of metallic materials in accordance with ISO 6892‑1:2019‑11.

✨ Scope and Purpose

The Tensile Test Ontology enables the standardized description of tensile test experiments and their results, supporting FAIR data principles and semantic interoperability within materials science and engineering.
TTO is designed as a domain ontology module extending the PMD Core Ontology (PMDco) version 3.0 and can be seamlessly integrated into the broader PMD ontology ecosystem.

🧱 Ontology Content

This initial release includes:

• A formal conceptualization of the tensile testing process, covering:
  • specimen geometry and preparation
  • test setup and testing machine
  • loading procedures and boundary conditions
  • measured primary data (e.g. force, elongation)
  • derived and evaluated material properties (e.g. yield strength, elastic modulus, elongation at break)
• Explicit alignment with ISO 6892‑1:2019‑11, reusing terms, definitions, and symbols from the standard wherever applicable.
• Integration with PMDco 3.0 to ensure interoperability with other materials characterization, processing, and simulation data within PMD.

📊 Exemplary Data

An exemplary RDF/TTL dataset is included, demonstrating the mapping of real tensile test data to the ontology.
The data mapping workflow is documented via a Jupyter Notebook and serves as a reference implementation for ontology-based data annotation and reuse.

Full Changelog: https://github.com/materialdigital/tensile-test-ontology/commits/v3.0.0