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Abstract
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 small 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.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Microcrack interaction leading to shear fracture |
| Year Published | 1992 |
| Language | English |
| Publisher | American Rock Mechanics Association |
| Description | ARMA-92-0807, 10 p. |
| Larger Work Type | Book |
| Larger Work Subtype | Conference publication |
| Larger Work Title | 33rd U.S. Symposium on Rock Mechanics |
| First page | 807 |
| Last page | 816 |
| Conference Title | 33rd U.S. Symposium on Rock Mechanics |
| Conference Location | Santa Fe, New Mexico, United States |
| Conference Date | June 3-5, 1992 |
| Google Analytic Metrics | Metrics page |