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# Class: pmdco:PMD_0000005 (behavioral material property)
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# Class: pmdco:PMD_0000005 (material property)
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AnnotationAssertion(rdfs:comment pmdco:PMD_0000005 "Technical materials are complex object aggregates. The properties that are determined for those object aggregates are intrinsically associated with the methodologies employed in the measurement process. This is in contrast to typical 'physical' properties, which like e.g. mass that can be determined to high accuracy independently of the measurement process.
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As a consequence, the behavoiral material properties in the ontology are differeciated according to their measurement method, e.g. Brinell hardness and Vickers hardness are different types of indentation hardness rather than different measures/quantification (GDC) of the materials property 'indentation hardness'.
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The 'unit idenifieres' of such properties (e.g. \"HV1\", \"HV10\", \"HBW\") are strictly speaking not units but rather references to the measurement methodology used to determine a numeric value that quantifies the property."@en)
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AnnotationAssertion(rdfs:label pmdco:PMD_0000005 "behavioral material property"@en)
AnnotationAssertion(skos:definition pmdco:PMD_0000005 "A property is a material trait in terms of the kind and magnitude of response to a specific imposed stimulus. Generally, definitions of properties are made independent of material shape and size.
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(Callister, W.D., Rethwisch, D.G., Materials Science and Engineering, Wiley, 2014)
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We only deal with intensive (system-size independent) material properties. Extensive properties that depend on the testpiece/specimen/probe size should be found in the respective testing method modules."@en)
SubClassOf(Annotation(rdfs:comment "Due to the duality of object and portion of matter this axiom can not be an equivalent class axiom."@en) pmdco:PMD_0000005 ObjectSomeValuesFrom(obo:RO_0000052 ObjectIntersectionOf(pmdco:PMD_0000001 ObjectSomeValuesFrom(obo:RO_0000056 obo:BFO_0000015))))
AnnotationAssertion(skos:definition pmdco:PMD_0010013 "a disposition to gain a greatly increased hardness at the surface or entire volume by the process of hardening")
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SubClassOf(pmdco:PMD_0010013 obo:BFO_0000016)
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SubClassOf(pmdco:PMD_0010013 pmdco:PMD_0000005)
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# Class: pmdco:PMD_0010022 (containing magnetic species)
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AnnotationAssertion(rdfs:label pmdco:PMD_0010022 "containing magnetic species")
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AnnotationAssertion(skos:definition pmdco:PMD_0010022 "A disposition that inheres in a material entity in virtue of the presence of one or more magnetic species (e.g. ferromagnetic, paramagnetic, or diamagnetic particles or atoms), and that manifests under appropriate conditions as the ability of that material entity to exhibit a magnetic response or influence in a magnetic field."@en)
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