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Advances in Acoustics and Vibration
Volume 2011, Article ID 735913, 10 pages
http://dx.doi.org/10.1155/2011/735913
Research Article

Localization by Acoustic Emission in Transversely Isotropic Slate

1K.U.Leuven, Spatial Applications Division Leuven, B3000 Leuven, Belgium
2K.U.Leuven, Research Unit Mining, B3000 Leuven, Belgium

Received 23 December 2010; Accepted 15 May 2011

Academic Editor: Joseph C. S. Lai

Copyright © 2011 Bjorn Debecker and André Vervoort. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A method for localization by acoustic emission in transversely isotropic media is developed and validated. Velocities are experimentally measured and then used to calculate a database of theoretical arrival times for a large number of positions. During an actual test, positions are assigned by comparing measured arrival times with the database's arrival times. The method is applied during load tests on slate samples and compared with visual observations of fractures. The localization method allowed for a good identification of the regions of fracturing at different stages during the test.