LOCATION OF ACOUSTIC EMISSIONS DURING FRACTURE OF SLIGHTLY ANISOTROPIC GRANITE.

Charles Dowding*, L. Samama, Surendra P Shah, J. F. Labuz

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Locations of energy release during controlled fracture propagation in two dimensional granite specimens were determined with acoutic emission (AE) techniques. A method was developed to account for a small directional anisotropy in wave propagation velocity. The location technique resulted in calculated locations near the microscopically visible fracture plane. The proximity of the AE events to the crack verified the usefulness of the technique to determine the location of the region of plastic deformation associated with fracture propagation - the fracture process zone. This paper presents the location techniques, before the description of the material tested and the event locations themselves.

Original languageEnglish (US)
Title of host publicationProceedings - Symposium on Rock Mechanics
PublisherA. A. Balkema
Pages731-738
Number of pages8
Volume2
ISBN (Print)906191602X
StatePublished - Jan 1 1985

ASJC Scopus subject areas

  • Engineering(all)

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