TY - GEN
T1 - Microcrack interaction leading to shear fracture
AU - Lockner, David A.
AU - Reches, Ze'ev
AU - Moore, Diane E.
PY - 1991
Y1 - 1991
N2 - In this paper we draw upon recent laboratory results concerning the nucleation and growth of shear fractures in brittle rock. In homogeneous, crystalline rock such as granite, fault nucleation occurs rapidly and with only subtle changes in precursory microcrack patterns. Once nucleated, the fault grows rapidly, restricting microcrack damage to a samll region near the advancing fracture front. Observations of acoustic emission locations during fault nucleation and growth combined with determinations of microcrack densities in the fractured samples have led to a conceptual model in which brittle fracture is controlled by microcrack interactions.
AB - In this paper we draw upon recent laboratory results concerning the nucleation and growth of shear fractures in brittle rock. In homogeneous, crystalline rock such as granite, fault nucleation occurs rapidly and with only subtle changes in precursory microcrack patterns. Once nucleated, the fault grows rapidly, restricting microcrack damage to a samll region near the advancing fracture front. Observations of acoustic emission locations during fault nucleation and growth combined with determinations of microcrack densities in the fractured samples have led to a conceptual model in which brittle fracture is controlled by microcrack interactions.
UR - http://www.scopus.com/inward/record.url?scp=0026271585&partnerID=8YFLogxK
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AN - SCOPUS:0026271585
SN - 9054100451
T3 - U.S. Symposium on Rock Mechanics
SP - 807
BT - Rock Mechanics Proceedings of the 33rd U.S. Symposium
PB - Publ by A.A. Balkema
T2 - Proceedings of the 1992 MRS Fall Meeting: Symposium U, Solid State Ionics
Y2 - 3 June 1992 through 5 June 1992
ER -