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Article: The brazilian disc test for rock mechanics applications: Review and new insights

TitleThe brazilian disc test for rock mechanics applications: Review and new insights
Authors
KeywordsTensile strength
Brazilian test
Review
Crack initiation
Rock mechanics
Tensile strain
Issue Date2013
Citation
Rock Mechanics and Rock Engineering, 2013, v. 46, n. 2, p. 269-287 How to Cite?
AbstractThe development of the Brazilian disc test for determining indirect tensile strength and its applications in rock mechanics are reviewed herein. Based on the history of research on the Brazilian test by analytical, experimental, and numerical approaches, three research stages can be identified. Most of the early studies focused on the tensile stress distribution in Brazilian disc specimens, while ignoring the tensile strain distribution. The observation of different crack initiation positions in the Brazilian disc has drawn a lot of research interest from the rock mechanics community. A simple extension strain criterion was put forward by Stacey (Int J Rock Mech Min Sci Geomech Abstr 18(6):469-474, 1981) to account for extension crack initiation and propagation in rocks, although this is not widely used. In the present study, a linear elastic numerical model is constructed to study crack initiation in a 50-mm-diameter Brazilian disc using FLAC3D. The maximum tensile stress and the maximum tensile strain are both found to occur about 5 mm away from the two loading points along the compressed diameter of the disc, instead of at the center of the disc surface. Therefore, the crack initiation point of the Brazilian test for rocks may be located near the loading point when the tensile strain meets the maximum extension strain criterion, but at the surface center when the tensile stress meets the maximum tensile strength criterion. © 2012 Springer-Verlag.
Persistent Identifierhttp://hdl.handle.net/10722/214004
ISSN
2015 Impact Factor: 2.386
2015 SCImago Journal Rankings: 1.939

 

DC FieldValueLanguage
dc.contributor.authorLi, Diyuan-
dc.contributor.authorWong, Louis Ngai Yuen-
dc.date.accessioned2015-08-19T13:41:30Z-
dc.date.available2015-08-19T13:41:30Z-
dc.date.issued2013-
dc.identifier.citationRock Mechanics and Rock Engineering, 2013, v. 46, n. 2, p. 269-287-
dc.identifier.issn0723-2632-
dc.identifier.urihttp://hdl.handle.net/10722/214004-
dc.description.abstractThe development of the Brazilian disc test for determining indirect tensile strength and its applications in rock mechanics are reviewed herein. Based on the history of research on the Brazilian test by analytical, experimental, and numerical approaches, three research stages can be identified. Most of the early studies focused on the tensile stress distribution in Brazilian disc specimens, while ignoring the tensile strain distribution. The observation of different crack initiation positions in the Brazilian disc has drawn a lot of research interest from the rock mechanics community. A simple extension strain criterion was put forward by Stacey (Int J Rock Mech Min Sci Geomech Abstr 18(6):469-474, 1981) to account for extension crack initiation and propagation in rocks, although this is not widely used. In the present study, a linear elastic numerical model is constructed to study crack initiation in a 50-mm-diameter Brazilian disc using FLAC3D. The maximum tensile stress and the maximum tensile strain are both found to occur about 5 mm away from the two loading points along the compressed diameter of the disc, instead of at the center of the disc surface. Therefore, the crack initiation point of the Brazilian test for rocks may be located near the loading point when the tensile strain meets the maximum extension strain criterion, but at the surface center when the tensile stress meets the maximum tensile strength criterion. © 2012 Springer-Verlag.-
dc.languageeng-
dc.relation.ispartofRock Mechanics and Rock Engineering-
dc.subjectTensile strength-
dc.subjectBrazilian test-
dc.subjectReview-
dc.subjectCrack initiation-
dc.subjectRock mechanics-
dc.subjectTensile strain-
dc.titleThe brazilian disc test for rock mechanics applications: Review and new insights-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s00603-012-0257-7-
dc.identifier.scopuseid_2-s2.0-84879416607-
dc.identifier.hkuros259287-
dc.identifier.volume46-
dc.identifier.issue2-
dc.identifier.spage269-
dc.identifier.epage287-

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