Damage Evolution During Rock Dynamic Compression Revealed by Wavelet Analysis of Acoustic Emission Signals

Acoustic emissions have been monitored during rock compression under both quasi-static and dynamic conditions. A new method is proposed in this study to study the damage evolution of rocks during dynamic compression by continuous wavelet analysis of acoustic emission signals. Wavelet analysis is fir...

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Published in:Rock mechanics and rock engineering 2024-02, Vol.57 (2), p.1527-1535
Main Authors: Yang, Ling, Wu, Bangbiao, Xu, Ying, Fu, Yan, Xia, Kaiwen
Format: Article
Language:English
Subjects:
Acoustic emission
Acoustics
Analysis
Civil Engineering
Compression
Damage
Earth and Environmental Science
Earth Sciences
Emission analysis
Evolution
Frequency spectra
Frequency spectrum
Geophysics/Geodesy
Load distribution
Loading rate
Rock
Rocks
Shear
Technical Note
Time-frequency analysis
Wavelet analysis
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cited_by cdi_FETCH-LOGICAL-c319t-b8ba48ff51a25db29094272ca25934789bd629a1a5093233928336e400c5a9c93
cites cdi_FETCH-LOGICAL-c319t-b8ba48ff51a25db29094272ca25934789bd629a1a5093233928336e400c5a9c93
container_end_page 1535
container_issue 2
container_start_page 1527
container_title Rock mechanics and rock engineering
container_volume 57
creator Yang, Ling
Wu, Bangbiao
Xu, Ying
Fu, Yan
Xia, Kaiwen
description Acoustic emissions have been monitored during rock compression under both quasi-static and dynamic conditions. A new method is proposed in this study to study the damage evolution of rocks during dynamic compression by continuous wavelet analysis of acoustic emission signals. Wavelet analysis is first validated against conventional method using the acoustic emission data from a quasi-static compression test. The wavelet analysis is then carried out on acoustic emission signals from rock dynamic compression to obtain the time–frequency spectrum. Based on the characteristics of the time–frequency spectrums, the rock exhibits a mixed damage mode shifting from tensile to shear damage. The increase in the loading rate leads to an increase in the amount of tensile damage. The proposed method provides an effective way to analyze the dynamic damage evolution of rocks. Highlights A new method is proposed to study the damage evolution during rock dynamic compression using acoustic emission (AE) signals. This method uses the characteristics of time–frequency spectrum of AE signals obtained from continuous wavelet analysis. During dynamic compression the rock exhibits a mixed damage mode shifting from tensile to shear damage.
doi_str_mv 10.1007/s00603-023-03644-1
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subjects Acoustic emission
Acoustics
Analysis
Civil Engineering
Compression
Damage
Earth and Environmental Science
Earth Sciences
Emission analysis
Evolution
Frequency spectra
Frequency spectrum
Geophysics/Geodesy
Load distribution
Loading rate
Rock
Rocks
Shear
Technical Note
Time-frequency analysis
Wavelet analysis
title Damage Evolution During Rock Dynamic Compression Revealed by Wavelet Analysis of Acoustic Emission Signals
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