Study of acoustic emission signals during fracture shear deformation

We study acoustic manifestations of different regimes of shear deformation of a fracture filled with a thin layer of granular material. It is established that the observed acoustic portrait is determined by the structure of the fracture at the mesolevel. Joint analysis of the activity of acoustic pu...

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Bibliographic Details
Published in:Acoustical physics 2016-07, Vol.62 (4), p.505-513
Main Authors: Ostapchuk, A. A., Pavlov, D. V., Markov, V. K., Krasheninnikov, A. V.
Format: Article
Language:English
Subjects:
Acoustics
Acoustics of Structurally Inhomogeneous Solid Bodies: Geoacoustics
Contact
Evolution
Fracture mechanics
Granular materials
Physics
Physics and Astronomy
Self organizing systems
Shear deformation
Spectra
Thin films
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Summary:We study acoustic manifestations of different regimes of shear deformation of a fracture filled with a thin layer of granular material. It is established that the observed acoustic portrait is determined by the structure of the fracture at the mesolevel. Joint analysis of the activity of acoustic pulses and their spectral characteristics makes it possible to construct the pattern of internal evolutionary processes occurring in the thin layer of the interblock contact and consider the fracture deformation process as the evolution of a self-organizing system.
ISSN:1063-7710
1562-6865
DOI:10.1134/S1063771016040138