Acoustic Emission Source Localization in Heterogeneous Rocks with Random Inclusions Using a PRM-Based Wave Velocity Model

Weng, Lei; Wu, Zhijun; Wang, Zhiyang; Chu, Zhaofei; Xu, Xiangyu; Liu, Quansheng

doi:10.1007/s00603-023-03236-z

Cited by 8 publications

(3 citation statements)

References 47 publications

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“…(2) AE localization is determining the location of damage sources by recording the arrival time of AE events. Due to the heterogeneity of rocks and the complex propagation path of sound waves, the accuracy of AE localization poses certain challenges [27] .…”

Section: Discussionmentioning

confidence: 99%

“…The relationship between AE events and coal damage instability was explored, and its mechanism was explained. Wen et al [27] proposed a new method for locating AE sources, which combined with moment tensor inversion results to elucidate the failure mechanism of grouting specimens containing random inclusions. Zhao et al [28] investigated the failure characteristics of rocks containing defects.…”

Section: Introductionmentioning

confidence: 99%

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Study on failure mechanism of tight sandstone based on moment tensor inversion

Dang

Yang

Zhu

2023

Heliyon

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on failure mechanism of tight sandstone based on moment tensor inversion

Dang

Yang

Zhu

2023

Heliyon

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“…The wave velocity of the medium, which is usually obtained from the linear relationship between the acoustic wave test propagation distance and propagation time [25,26], is often associated with the mechanical properties of the medium to analyze its damage changes [27,28]. Madhubabu [29] et al used multiple linear regression analysis (MVRA) and artificial neural network (ANN) to predict the compressive strength and elastic modulus of carbonate rocks by measuring parameters such as ultrasonic wave velocity and porosity.…”

Section: Introductionmentioning

confidence: 99%

An Improved Rock Damage Characterization Method Based on the Shortest Travel Time Optimization with Active Acoustic Testing

Zhou,

Liu,

Zhao

et al. 2024

Mathematics

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Real-time evaluation of the damage location and level of rock mass is essential for preventing underground engineering disasters. However, the heterogeneity of rock mass, which results from the presence of layered rock media, faults, and pores, makes it difficult to characterize the damage evolution accurately in real time. To address this issue, an improved method for rock damage characterization is proposed. This method optimizes the solution of the global shortest acoustic wave propagation path in the medium and verifies it with layered and defective media models. Based on this, the relationship between the inversion results of the wave velocity field and the distribution of rock damage is established, thereby achieving quantitative characterization of rock damage distribution and degree. Thus, the improved method is more suitable for heterogeneous rock media. Finally, the proposed method was used to characterize the damage distribution evolution process of rock media during uniaxial compression experiments. The obtained results were compared and analyzed with digital speckle patterns, and the influencing factors during the use of the proposed method are discussed.

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