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• W3189694808 abstract "Previous studies have shown that water can reduce the acoustic emission (AE) energy and other parameters during rock failure. However, the fracture mechanism of rock can be better reflected by analyzing the AE waveform. Therefore, this paper conducted experiments of uniaxial compression on sandstone samples of various water contents and collected AE signals simultaneously. Analyses of fast Fourier transform (FFT) and Hilbert-Huang transform (HHT) were performed on the AE waveform when the sample failed. The results show that as the water content increases, the frequency and intensity of the AE signal will decrease. The influence of water on the intensity of the AE signal is greater than that on the frequency. Through the analysis of the energy mechanism of rock failure, it is pointed out that the frequency and intensity of AE signal are closely related to elastic energy index <math xmlns=http://www.w3.org/1998/Math/MathML id=M1> <msub> <mrow> <mi>W</mi> </mrow> <mrow> <mtext>ET</mtext> </mrow> </msub> </math> and burst energy index <math xmlns=http://www.w3.org/1998/Math/MathML id=M2> <msub> <mrow> <mi>K</mi> </mrow> <mrow> <mtext>E</mtext> </mrow> </msub> </math> . The research results have guiding significance for the monitoring of rockburst." @default.
• W3189694808 created "2021-08-16" @default.
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• W3189694808 date "2021-08-04" @default.
• W3189694808 modified "2023-10-15" @default.
• W3189694808 title "Acoustic Emission Waveform Analysis of Sandstone Failure with Different Water Content" @default.
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• W3189694808 doi "https://doi.org/10.1155/2021/5290076" @default.
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