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A large-scale mechanical testing facility permits previously impossible thin-walled tube multiaxial loading experiments on rock materials. Constraints are removed regarding tube wall thickness in relation to rock microstructural features and tube diameter as well as test machine load capacity. Thin-walled tube studies clarify the influence of intermediate principal stress sigma/sub 2/ on rock fracture and help define a realistic rock fracture criterion for all multiaxial stressing situations. By comparing results of thin-walled and thick-walled tube fracture investigations, effects of stress gradients can be established. Finally, influence of stress path on rock fracture, an area largely ignored in current rock failure criteria, can be examined in detail using controlled loading changes as well as specimen prestrains.
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| Authors: |
Hecker, S.S.;
Petrovic, J.J.
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| Publication Date: | 1981 Jul 01 |
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| OSTI Identifier: | 5527457 |
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| Resource Type: | Journal Article |
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| Resource Relation: | Journal Name: Geophys. Res. Lett.; (United States); Journal Volume: 8:7 |
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| Research Org: | Chemistry-Materials Science Division, Los Alamos National Laboratory, Los Alamos, NM 87545 |
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| Country of Publication: | United States |
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| Language: | English |
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| Format: | Size: Pages: 703-706 |
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| Other Number(s): | Journal ID: CODEN: GPRLA |
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| Subject: | 58 GEOSCIENCES; ROCK MECHANICS; FRACTURE PROPERTIES; MATERIALS TESTING; PRESSURE DEPENDENCE; SHEAR; STRESS INTENSITY FACTORS; STRESSES; TUBES; MECHANICAL PROPERTIES; MECHANICS; TESTING |
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| Update Date: | 2009 Dec 16 |
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