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Geotechnical and Geological Engineering
Published in: Geotechnical and Geological Engineering 4/2021

10-02-2021 | Original Paper

Acoustic Emission Investigation on Crack Propagation Mode of Sandstone During Brazil Splitting Process

Authors: Xiaohu Zhang, Xuebin Cui, Qiongqiong Tang, Yanhua Sun

Published in: Geotechnical and Geological Engineering | Issue 4/2021

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Abstract

In the present work, the Brazilian tests for six sandstone samples were carried out. The acoustic emission (AE) method was applied to analyze the characteristics of the crack propagating mode and further to classify the cracking mode during the whole sandstone lump Brazilian splitting process. The study results showed that the AE event produced during the whole loading process, and different loading stages demonstrate different AE features. The amplitude of AE signals was increasing along with the loading stress, and there is a period of quiet time before the failure of the sample. It also concluded that more than 99% of the whole cracking signals are classified as tensile mode, and there are precious few shear cracks that occurred during the Brazilian test; the central frequency of the occurrence of the tensile crack is 138.58 kHz.
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Metadata
Title
Acoustic Emission Investigation on Crack Propagation Mode of Sandstone During Brazil Splitting Process
Authors
Xiaohu Zhang
Xuebin Cui
Qiongqiong Tang
Yanhua Sun
Publication date
10-02-2021
Publisher
Springer International Publishing
Published in
Geotechnical and Geological Engineering / Issue 4/2021
Print ISSN: 0960-3182
Electronic ISSN: 1573-1529
DOI
https://doi.org/10.1007/s10706-020-01660-4

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