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Statistical properties of fracture precursors
Authors: Garcimartin, A. (Ángel)
Guarino, A. (A.)
Lebon, L. (L.)
Ciliberto, S. (S.)
Keywords: Materias Investigacion::Física
Issue Date: 1997
Publisher: American Physical Society
ISSN: 0031-9007
Citation: Europhys Lett, 79 (17), pp. 3202-3205
We present the data of a mode-I fracture experiment. The samples are broken under imposed pressure. The acoustic emission of microfractures before the breakup of the sample is registered. From the acoustic signals, the position of microfractures and the energy released are calculated. A measure of the clustering of microfractures yields information about the critical load. The statistics from energy measurements strongly suggest that the fracture can be viewed as a critical phenomenon; energy events are distributed in magnitude as a power law, and a critical exponent is found for the energy near fracture.
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