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June 12, 2026Geomechanics and Geophysics for Geo-Energy and Geo-ResourcesOpen Access

Study on acoustic emission response and damage evolution characteristics of sandstone with X-shaped fissures at different inclination angles under uniaxial compression

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Authors

NZNa ZhaoLiaoning Technical UniversityMDMingrui DingLiaoning Technical UniversitySWShuai WeiLiaoning Technical University

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Implication

Randomized trial examines damage characteristics in sandstone under different fissure angles, suggesting critical failure mechanisms.

Key Points

  • The study aims to investigate how varying the intersection angle of X-shaped fissures in sandstone affects its failure process and acoustic emission response.
  • Conducted uniaxial compression tests on sandstone samples with X-shaped fissures at angles of 30°, 60°, and 90°.
  • Performed acoustic emission (AE) tests to analyze damage evolution characteristics and acoustic responses during compression.
  • Applied RA–AF analysis to determine the dominance of tensile versus shear failure modes.
  • At a fissure angle of 60°, the highest degree of tensile failure (92.4%) was observed, indicating poor resistance to deformation.
  • The cumulative ringing count showed a three-stage evolution with early inflection at 60° and 75°, entering plastic evolution sooner, around 165 seconds.
  • The fitting results indicated that 60° led to the earliest damage acceleration, while 75° demonstrated the fastest damage rate (B = 0.17).

Cite This Study

Zhao et al. (2026) studied this question.

synapsesocial.com/papers/6a2ba2448101cf8926f01560https://doi.org/10.1007/s40948-026-01170-2
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  1. 1Study on the fracture behavior of prefabricated fissures granite based on DIC and laser scanning techniques2021 · 20 citations