Stress dependence of source mechanisms from acoustic emission

Ketan R. Shah, Joseph F Labuz

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

Abstract

Acoustic emission activity was monitored during unconfined compression of rock-like materials. Hypocenters were located based on the first arrival of the waveforms and source mechanisms were studied using the polarities of the waveforms immediately after the first arrival. Localization in the form of spalling near the free surface was detected by the concentration of hypocenters at approximately 92% of the peak load. Source mechanisms, however, seemed to shift from opening to sliding and closing before localization at around 86% of the peak load. The change in mechanisms may be a precusor to failure.

Original languageEnglish (US)
Title of host publicationProceedings of Engineering Mechanics
Pages1151-1154
Number of pages4
Volume2
StatePublished - Jan 1 1995
EventProceedings of the 10th Conference on Engineering Mechanics. Part 1 (of 2) - Boulder, CO, USA
Duration: May 21 1995May 24 1995

Other

OtherProceedings of the 10th Conference on Engineering Mechanics. Part 1 (of 2)
CityBoulder, CO, USA
Period5/21/955/24/95

Fingerprint Dive into the research topics of 'Stress dependence of source mechanisms from acoustic emission'. Together they form a unique fingerprint.

Cite this