Acoustic emission characteristic during rock fatigue damage and failure

Xu, Jiang; Shu-chun, LI; Tao, Yunqi; Tang, Xiaojun; Xin, Wu

doi:10.1016/j.proeps.2009.09.088

Cited by 41 publications

(9 citation statements)

References 1 publication

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“…ere may be multiple peaks of acoustic emission events. It can be seen that acoustic emission events are accompanied by rock mass damage, which is consistent with the previous researches [12][13][14][15]. e evolution characteristics of acoustic emission of rock pillars at different joint positions are basically the same, which goes through the process of none-slow increase-sharp increase.…”

Section: Ae Characteristics Analysissupporting

confidence: 89%

“…Liu et al [13] analyzed the mechanical properties, acoustic emission characteristics, and the relationship between rock mass damage laws and AE based on PFC 3D models. Jiang et al [14] investigated the acoustic emission characteristic during rock fatigue damage and failure. e research result shows that the AE signal of materials arises from the damage, and the damage variable of rock mass can be established based on AE count, energy, and hits.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Parallel‐Joint Position on Mechanical Behavior and Acoustic Emission Characteristics of Rock Pillar

Zhang

Sun³

et al. 2021

Shock and Vibration

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In this paper, the parallel-joint rock column model is established based on PFC software, and the effects of different joint positions on the mechanical properties, acoustic emission characteristics, and damage evolution characteristics of rock columns are analyzed. In the PFC models, the intact rock is simulated by parallel-bond model, and the joints are simulated by flat-joint contact model. The research result shows that on the whole, when the joint is outside the rock pillar, the UCS of the rock pillar is higher than that of the joint inside the rock pillar, while the elastic modulus is less than that of rock pillar with joint inside. The evolution characteristics of acoustic emission of rock pillars at different joint positions are basically the same. However, the maximum value of acoustic emission events and corresponding deformation of rock pillars at different joint positions are different. The damage of jointed rock mass can generally show three stages: no damage, slow damage increase, and sharp damage increase.

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Section: Ae Characteristics Analysissupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Influence of Parallel‐Joint Position on Mechanical Behavior and Acoustic Emission Characteristics of Rock Pillar

Zhang

Sun³

et al. 2021

Shock and Vibration

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“…Jiang et al (2009) report that AE are well correlated with the stress-strain evolution. There are more hits at the beginning (first cycle).…”

Section: Crack Development and Measurementmentioning

confidence: 95%

Cyclic and Fatigue Behaviour of Rock Materials: Review, Interpretation and Research Perspectives

Cerfontaine¹,

Collin²

2017

Rock Mech Rock Eng

293

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“…Wang et al [5] made a detailed analysis of the AE characteristics of granite and sandstone during uniaxial compression. Jiang et al [6] analyzed the AE characteristics of red sandstone during fatigue damage and discussed that the rationality of damage varies based on axial strain. Wang [7] studied the AE characteristics of conglomerate, sandstone, and mudstone under different stress conditions.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Acoustic Emission and Resistivity Response of Sandstone under Constant Amplitude Cyclic Loading

Wang

Li²,

Huang

et al. 2021

Advances in Materials Science and Engineering

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A lot of engineering practice shows that, during the construction and operation of rock mass projects, in addition to the static load, the rock is more subjected to cyclic load. Constant amplitude cyclic load is one of the simpler cyclic loading methods. The damage of rocks gradually accumulates under the action of periodic cyclic load, and finally, fatigue damage occurs, which affects the stability of the project. Therefore, it is necessary to study the mechanical properties of the rock under the action of constant amplitude cyclic load. Acoustic emission (AE) parameters and resistivity are both sensitive to the damage process of the rock and can well describe the damage evolution law of the rock. Under the action of constant amplitude cyclic loading, different loading conditions, different state specimens, and so on, factors will make a big difference to the AE signal and resistivity, such as the difference in stress amplitude, loading rate, and saturation. Therefore, in this paper, the typical sandstone in the Chongqing area is taken as the research object, the AE characteristics and resistivity characteristics of sandstone under different test conditions such as different stress amplitude, different loading frequency, and different saturation are tested, and the evolution of AE is found. It also has a three-stage rule: in the initial stage, the deformation is faster and the AE signal is strong; in the constant velocity stage, the deformation develops slowly and the AE signal is also stable; in the acceleration stage, the deformation develops sharply and the AE signal also becomes more intense. With the increase of cyclic loading stress amplitude, or the decrease of cyclic loading frequency, or the decrease of rock sample saturation, the acoustic emission signal generated in each cycle will be stronger. The resistivity as a whole shows a rapid decline in the loading phase and a rapid rebound in the unloading phase. The changes in resistivity at different stress amplitudes show differences in the first few cycles; the overall change trend of resistivity at different frequencies is consistent, but the rate of change increases with decreasing frequency, and the variation trend of resistivity is very different under different saturation.

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Acoustic emission characteristic during rock fatigue damage and failure

Cited by 41 publications

References 1 publication

Influence of Parallel‐Joint Position on Mechanical Behavior and Acoustic Emission Characteristics of Rock Pillar

Influence of Parallel‐Joint Position on Mechanical Behavior and Acoustic Emission Characteristics of Rock Pillar

Cyclic and Fatigue Behaviour of Rock Materials: Review, Interpretation and Research Perspectives

Experimental Study on Acoustic Emission and Resistivity Response of Sandstone under Constant Amplitude Cyclic Loading

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