@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix gsp: <http://www.opengis.net/ont/geosparql#> .
@prefix locn: <http://www.w3.org/ns/locn#> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.amerigeoss.org/dataset/30771e7b-29b2-4ba3-8b15-cb0f06d4adfc> a dcat:Dataset ;
    dct:description "Includes test data from Confined Brazilian Tests. The tests were aim at investigating the rock failure envelope of four different lithologies including Indiana limestone, Scioto sandstone, Grey Berea sandstone, and Tennessee sandstone. Tables include the strength data obtained using load and damage controlled Brazilian tests on the six lithologies. Confine Brazilian tests are preformed by wrapping a sample in a copper jacket so that the confining fluid does not directly interact with the sample. Then a constant confining pressure is applied to the fluid to create a state of triaxial stress in the disc such that the disc center is under three nonzero and unequal principal stress components. By increasing the confining pressure, the least principal stress changes from tensile to compressive so that rock failure can be investigated over a wide range of stress conditions." ;
    dct:identifier <https://data.openei.org/submissions/4480> ;
    dct:issued "2021-08-31T06:00:00+00:00"^^xsd:dateTime ;
    dct:modified "2021-11-08T18:36:23+00:00"^^xsd:dateTime ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-106.1155 36.0848, -92.1959 36.0848, -92.1959 42.6778, -106.1155 42.6778, -106.1155 36.0848))"^^gsp:wktLiteral ] ;
    dct:title "Confined Brazilian Tests for Rock Failure Envelope and Behavior" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Ahmad Ghassemi" ;
            vcard:hasEmail <mailto:ahmad.ghassemi@ou.edu> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/30771e7b-29b2-4ba3-8b15-cb0f06d4adfc/resource/be8062cd-d5b3-4609-8a96-3e550cd89419>,
        <https://data.amerigeoss.org/dataset/30771e7b-29b2-4ba3-8b15-cb0f06d4adfc/resource/cfe3492d-0f78-4b91-ab0d-bcaee655e1bd> ;
    dcat:keyword "AmeriGEO",
        "AmeriGEOSS",
        "CKAN",
        "GEO",
        "GEOSS",
        "National",
        "North America",
        "United States",
        "brittle-ductile-transition",
        "compressive",
        "confined-brazilian-test",
        "confining-pressure",
        "damage-contol",
        "data",
        "failure",
        "failure-envelope",
        "fracture",
        "geology",
        "geophysics",
        "goemechanics",
        "grey-berea-sandstone",
        "indiana-limestone",
        "limestone",
        "load-control",
        "sandstone",
        "scioto-sandstone",
        "strength",
        "stress",
        "tennessee-sandstone",
        "tensile",
        "test",
        "testing",
        "triaxial-stress" .

<https://data.amerigeoss.org/dataset/30771e7b-29b2-4ba3-8b15-cb0f06d4adfc/resource/be8062cd-d5b3-4609-8a96-3e550cd89419> a dcat:Distribution ;
    dct:description "Data obtained from confined Brazilian tests. Tables include the strength data obtained using load and damage controlled Brazilian test." ;
    dct:format "DOC" ;
    dct:issued "2021-09-19T13:29:55.281682"^^xsd:dateTime ;
    dct:modified "2025-09-24T21:30:51.200973"^^xsd:dateTime ;
    dct:title "Confined Brazilian Tests Strength Tables.docx" ;
    dcat:accessURL <https://data.openei.org/files/4480/OpenEI-Tables.docx> ;
    dcat:mediaType "application/vnd.openxmlformats-officedocument.wordprocessingml.document" .

<https://data.amerigeoss.org/dataset/30771e7b-29b2-4ba3-8b15-cb0f06d4adfc/resource/cfe3492d-0f78-4b91-ab0d-bcaee655e1bd> a dcat:Distribution ;
    dct:description "Article published in AGU's Journal of Geophysical Research describing confined Brazilian tests and investigation on the impact of confining pressure on tensile strength, the failure mechanism, and brittle-ductile transition on four different rock types. " ;
    dct:format "HTML" ;
    dct:issued "2021-11-11T01:19:10.524957"^^xsd:dateTime ;
    dct:modified "2025-09-24T21:30:51.202400"^^xsd:dateTime ;
    dct:title "AGU JGR Article" ;
    dcat:accessURL <https://doi.org/10.1029/2021JB022471> ;
    dcat:mediaType "text/html" .

<https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> a foaf:Agent ;
    foaf:name "US Migrating" .