Acoustic Emission Waveform Analysis of Sandstone Failure with Different Water Content

Li, Hongru; He, Manchao; Shen, Rongxi; Xiao, Yingming; Cheng, Tai Hong

doi:10.1155/2021/5290076

Cited by 4 publications

(2 citation statements)

References 31 publications

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“…The related literature describes that the damage of rock mass in the conventional soaking state has gone through the stages of initial compaction closure, stable damage increase and damage acceleration [50,24], and proposes that the quantification of damage variables based on energy dissipation and AE is consistent. The view is consistent with the conclusion of the paper.…”

Section: Damage Evolution For Different Cps Degree Based On Energy Di...mentioning

confidence: 99%

Experimental Study of Confined-Pressure Soaking on Sandstone Damage-Fracture Characteristics Using Acoustic Emission and Energy Dissipation

2022

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In order to explore the mechanical characteristics of confined-pressure soaking (CPS) sandstone during the damage-fracture process, the uniaxial compression and acoustic emission (AE) experiment of CPS sandstone was conducted. The mechanical parameters, fracture morphology, AE and energy characteristics under uniaxial stress were researched. The results show that the uniaxial compressive strength and elastic modulus decrease as a logarithmic function with CPS parameters, corresponding to the inflection point of modification. The fracture mode gradually changes from brittleness to toughness with the increase in moisture content. The difference between fracture fragmentation and mechanical behavior mainly depends on the degree of CPS. The evolution of AE characteristics and energy dissipation has a good correspondence with CPS specimens. The higher the CPS degree is, the less the AE cumulative number is and the longer the excitation time is. Based on the phase variation of AE events and energy dissipation, the CPS damage variables are proposed to quantify the weakening degree and reveal the damage evolution process. The results provide a useful foundation for evaluating rock failure and improving service life.

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Section: Damage Evolution For Different Cps Degree Based On Energy Di...mentioning

confidence: 99%

Experimental Study of Confined-Pressure Soaking on Sandstone Damage-Fracture Characteristics Using Acoustic Emission and Energy Dissipation

2022

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“…However, we pay more attention to the application of real-time, convenient and lossless AE signals in measuring MC [ 7 ]. Yang Li et al have found that the AE characteristics of Yunnan pine with different MC are very different [ 8 ]. Xiaosong Li used wavelet decomposition to analyze AE signals in the frequency domain [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

A Wireless Acoustic Emission Sensor System with ACMD-IGWO-XGBoost Algorithm for Living Tree Moisture Content Diagnosis

Yang

Yin

Liu

2023

Plants

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Trunk water has an important influence on the metabolism and ecological balance of living trees, which affects the vegetation growth and moisture cycle of the whole forest ecosystem. The accurate and real-time measurement of moisture content (MC) is of vital guiding meaning to living tree cultivation and forest management. In this paper, a water content diagnosis system based on a wireless acoustic emission sensor network (WASN) was designed and implemented with the aim of the nondestructive detection of water content in living wood trunks. Firstly, the acoustic emission (AE) signal of the trunk epidermis was sampled at high speed; then, its characteristic parameters were calculated and transmitted wirelessly to the gateway. Furthermore, the optimal characteristic wavelet sequence was decomposed by the adaptive chirp mode decomposition (ACMD), and the improved grey wolf optimizer (IGWO) optimization XGBoost established the MC prediction model, which was improved by the multi-strategy joint optimization. Finally, field monitoring was carried out on Robinia Pseudoacacia, Photinia serrulata, Pinus massoniana and Toona sinensis. The average diagnostic accuracy reached 96.75%, which shows that the diagnosis system has excellent applicability in different working conditions.

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Influence of Water Content on Energy Partition and Release in Rock Failure: Implications for Water-Weakening on Rock-burst Proneness

et al. 2023

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Acoustic Emission Waveform Analysis of Sandstone Failure with Different Water Content

Cited by 4 publications

References 31 publications

Experimental Study of Confined-Pressure Soaking on Sandstone Damage-Fracture Characteristics Using Acoustic Emission and Energy Dissipation

Experimental Study of Confined-Pressure Soaking on Sandstone Damage-Fracture Characteristics Using Acoustic Emission and Energy Dissipation

A Wireless Acoustic Emission Sensor System with ACMD-IGWO-XGBoost Algorithm for Living Tree Moisture Content Diagnosis

Influence of Water Content on Energy Partition and Release in Rock Failure: Implications for Water-Weakening on Rock-burst Proneness

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