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 language | English (US) |
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| Title of host publication | Proceedings of Engineering Mechanics |
| Pages | 1151-1154 |
| Number of pages | 4 |
| Volume | 2 |
| State | Published - Jan 1 1995 |
| Event | Proceedings of the 10th Conference on Engineering Mechanics. Part 1 (of 2) - Boulder, CO, USA Duration: May 21 1995 → May 24 1995 |
Other
| Other | Proceedings of the 10th Conference on Engineering Mechanics. Part 1 (of 2) |
|---|---|
| City | Boulder, CO, USA |
| Period | 5/21/95 → 5/24/95 |