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Rock Mechanics and Rock Engineering

Erschienen in:

21.11.2023 | Technical Note

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

verfasst von: Ling Yang, Bangbiao Wu, Ying Xu, Yan Fu, Kaiwen Xia

Erschienen in: Rock Mechanics and Rock Engineering | Ausgabe 2/2024

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Abstract

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.

Vorheriger Artikel Correction to: Correcting the Permeability Evaluation of Elliptical Rock Fractures in Triaxial Shear-Flow Experiments Considering Channeling Flow

Nächster Artikel Discussion on “On the Measurement of B for a Sandstone” [Rock Mech Rock Eng 56:6127–6133]

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Titel: Damage Evolution During Rock Dynamic Compression Revealed by Wavelet Analysis of Acoustic Emission Signals
verfasst von: Ling Yang
Bangbiao Wu
Ying Xu
Yan Fu
Kaiwen Xia
Publikationsdatum: 21.11.2023
Verlag: Springer Vienna
Erschienen in: Rock Mechanics and Rock Engineering / Ausgabe 2/2024
Print ISSN: 0723-2632
Elektronische ISSN: 1434-453X
DOI: https://doi.org/10.1007/s00603-023-03644-1

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