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<p><b>Abstract</b>—The article overviews the results of computer and laboratory experiments on the deformation of samples of various rocks. To identify defect evolution patterns, a model based on the discrete element method was used. In a laboratory experiment, the evolution of a microcrack system in samples (Westerly granite, Berea sandstone, metasandstone) was studied using two independent nondestructive methods: acoustic emission and X-ray computed microtomography). It is shown that the energy distribution of acoustic emission signals accompanying failure is not always approximated by a power function. An exponential form of the energy distribution of AE signals indicates a stable state of the deformed material. A power-law type of distribution indicates that the process of defect accumulation has reached a critical stage, leading to catastrophic failure.</p>

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Features of Energy Distributions of Acoustic Emission Signals during Rocks Deformation: Laboratory Experiment and Computer Simulation

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • E. E. Damaskinskaya,
  • V. L. Hilarov

摘要

Abstract—The article overviews the results of computer and laboratory experiments on the deformation of samples of various rocks. To identify defect evolution patterns, a model based on the discrete element method was used. In a laboratory experiment, the evolution of a microcrack system in samples (Westerly granite, Berea sandstone, metasandstone) was studied using two independent nondestructive methods: acoustic emission and X-ray computed microtomography). It is shown that the energy distribution of acoustic emission signals accompanying failure is not always approximated by a power function. An exponential form of the energy distribution of AE signals indicates a stable state of the deformed material. A power-law type of distribution indicates that the process of defect accumulation has reached a critical stage, leading to catastrophic failure.