Data Model & Ontologies¶
Ontological foundation¶
The semantic backbone of CreepLitKG is the Creep Testing Ontology (CTO), whose terminology is derived from ISO 204:2018 — Metallic materials — Uniaxial creep testing in tension. CTO reuses and extends:
| Ontology | Role in CreepLitKG |
|---|---|
| BFO (Basic Formal Ontology) | Top-level categories: processes, qualities, temporal regions |
| RO (Relation Ontology) | Core relations: participates in, quality of, preceded by, member of |
| IAO (Information Artifact Ontology) | Publications, identifiers, denotes, is about, measurement unit labels |
| OBI (Ontology for Biomedical Investigations) | Plans, scalar value specifications, specified outputs |
| PMDco (Platform MaterialDigital core ontology) | Materials-science entities: creep testing process, microstructure, grain size, temperature |
| NFDIcore | DOIs, textual descriptions, standards |
| MWO (MatWerk Ontology) | Material and object identifiers |
| QUDT | Measurement unit IRIs (unit:MegaPA, unit:DEG_C, unit:MicroM, …) |