Acoustic Emission Characteristics of Red Sandstone Specimens Under Uniaxial Cyclic Loading and Unloading Compression

Meng, Qinglin; Zhang, Mingwei; Han, Lijun; Pu, Hai; Chen, Yanlong

doi:10.1007/s00603-017-1389-6

Cited by 188 publications

(60 citation statements)

References 33 publications

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“…In stage II, ε max increases linearly with N. In the third stage, ε max increases rapidly, eventually leading to failure. Similar behaviour can be found in the literature . Failure due to fatigue loading is controlled by the strain development, and closely related to the meso‐ damage evolution in the samples.…”

Section: Resultssupporting

confidence: 85%

“…Fan et al studied AE characteristics of salt under different cyclic loading paths and found that the AE activity was influenced by loading paths. Meng et al conducted uniaxial cyclic loading tests for red sandstone, and an AE test system was used to monitor the AE activity during sample deformation. The Kaiser and Felicity effects of rock AE activity were clarified, and they found that the cycle magnitude had an obvious influence on the AE activity.…”

Section: Introductionmentioning

confidence: 99%

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Anisotropic fatigue behaviour of interbeded marble subjected to uniaxial cyclic compressive loads

Wang

Gao

Liu

et al. 2020

Fatigue Fract Eng Mat Struct

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The work aims to experimentally investigate the anisotropic fatigue characteristics of marble with different bedding orientations using uniaxial fatigue experiments and posttest computed tomography (CT) scanning. The impacts of interbed orientation on the strength, deformation, fatigue life, and stimulated fracture pattern were systematically analysed. Results show that the axial, lateral, and volumetric strain curves present a three-stage deformation and are influenced by the interbed orientation. The volumetric strain is maximum and minimum for a marble sample with 30 and 90 orientation, respectively, which is closely related to the failure mode. The crack pattern in the CT images is related to the interbed orientation; the crack density and scale are the largest for a 90 orientation sample and are the smallest for a 30 orientation sample. Good correlation has been established between the fatigue lifetime and the interbed orientation. It is suggested that anisotropic cyclic behaviours of marble is structurally dependent. K E Y W O R D Sanisotropy, ct scanning, cyclic load, failure mode, marble

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Section: Resultssupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Anisotropic fatigue behaviour of interbeded marble subjected to uniaxial cyclic compressive loads

Wang

Gao

Liu

et al. 2020

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

“…However, the AE characteristics of rock are quite different under different stress paths. Meng et al 34 analysed the evolution of acoustic emissions of rock in the uniaxial cyclic loading and unloading stage, and they determined that the stress level required for the significant increase in AE activity was 70% of the subsequent peak stress. Xu et al 35 studied the fatigue failure characteristics of rock under cyclic loading by the AE method and established the damage variable expression based on the AE count, energy and hits.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of fracture damage of notched granite beams under cyclic loading using DIC and AE techniques

Tang

Chen

Dai

et al. 2020

Fatigue Fract Eng Mat Struct

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Fracture experiments of three-point bending notched granite beams were performed under cyclic loading using digital image correlation (DIC) and acoustic emission (AE) techniques. The damage evolution process of the specimen under cyclic loading was analysed on the basis of AE ring count and b value. The strain and displacement fields and the fracture process zone (FPZ) ahead of the crack tip were revealed by DIC. The results showed that the AE characteristics of rock fracture indicated a noticeable Kaiser effect in the stage of cyclic loading and unloading. Moreover, when the loading force reached 70% of its peak value, the AE characteristics showed the Felicity effect. The damage produced during the loading-unloading process contributed to the development of the cracks leading to the catastrophic fracture. Besides, a relatively high loading rate was found to help to suppress the development of the FPZ at the crack tip. K E Y W O R D Sacoustic emission, cyclic loading, digital image correlation, fracture damage, rock

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“…Jia et al [21] and Peng et al [22] carried out a series of triaxial cyclic compression tests, in order to characterize the deformation behavior under different confining pressures. In terms of nondestructive testing, Meng et al [23] explored AE characteristics of rock materials during the deformation and failure process under periodic loads, and the relationships among stress, strain, AE activity, accumulated AE activity, and duration under 36 loading and unloading rates were established. Meanwhile, Jia et al [24] used the code-wave interferometry method to evaluate the variation of the ultrasonic wave velocity and found fluctuations of wave velocity during the cyclic loading corresponding with loading stress change.…”

Section: Introductionmentioning

confidence: 99%

Damage Evolution and Failure Behavior of Post-Mainshock Damaged Rocks under Aftershock Effects

et al. 2019

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Rock stability has long been a hot topic during underground energy exploitation, but the failure process of rock materials under earthquake effects is extremely complicated, and the failure mechanism still remains unclear. In order to investigate the fatigue damage and failure behavior of rocks under aftershock effects considering the post-mainshock damage states, a series of laboratory tests were conducted on marble specimens subjected to stepwise cyclic loading. Four levels of peak stress (i.e., 10, 30, 50, and 70 MPa) were applied in the first cycle, to simulate mainshock damage.The results indicate that, with the increase of initial cycle amplitude, mainshock damage has a significant effect on deformation behavior, dissipated energy, P-wave velocity, and AE characteristics of tested specimens during aftershock process. The increasing amplitude of initial cycle enhances irreversible deformation and weakens the resistance to deformation, which accelerates the expansion of specimen volume and results in the reduction of bearing capacity. Furthermore, the increasing amplitude of initial cycle obviously changes the failure morphologies and intensifies the final macro-fracture scale of tested specimens, which are verified by acoustic emission AF-RA value and b-value, respectively.

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Acoustic Emission Characteristics of Red Sandstone Specimens Under Uniaxial Cyclic Loading and Unloading Compression

Cited by 188 publications

References 33 publications

Anisotropic fatigue behaviour of interbeded marble subjected to uniaxial cyclic compressive loads

Anisotropic fatigue behaviour of interbeded marble subjected to uniaxial cyclic compressive loads

Experimental investigation of fracture damage of notched granite beams under cyclic loading using DIC and AE techniques

Damage Evolution and Failure Behavior of Post-Mainshock Damaged Rocks under Aftershock Effects

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