Results 21 to 30 of about 2,588,815 (398)
International Journal of Distributed Sensor Networks, 2018 In this article, the acoustic emission tests of uniaxial cyclic load imposed on or released from the sandstone and mudstone were carried out. The deformation and failure characteristics and the law governing the acoustic emission activity were studied ...
Guangming Zhao, Chao Wang, Dongxu Liang
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Helioseismic analysis of the solar flare-induced sunquake of 2005 January 15 [PDF]
, 2006 We report the discovery of one of the most powerful sunquakes detected to date, produced by an X1.2-class solar flare in active region 10720 on 2005 January 15.
Besliu-Ionescu, D. +4 more
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Research of identification of acoustic emission signal of coal and rock
Gong-kuang zidonghua, 2013 In view of problem that it is difficult to identify acoustic emission signal of coal and rock burst under complicated noise environment, the paper proposed an identification method of acoustic emission signal of coal and rock based on wavelet packet and ...
TONG Min-ming +3 more
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Gong-kuang zidonghua, 2016 An information collection system of coal containing gas under uniaxial compression was built, dates' change of acoustic emission and mechanical parameters while coal samples loaded were tested, and damaged evolution model of coal and rock and ...
NIU Yue +7 more
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International Journal of Distributed Sensor Networks, 2019 Understanding the acoustic emission effects on bolts under cyclic loading is of great significance for the support of roadways. The presented research focuses on the acoustic emission characteristics of bolts under cyclic loading.
Tieliang An +5 more
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MATEC Web of Conferences, 2017 The acoustic emission phenomenon is directly associated with nucleation of cracks in structural materials during loading. This paper analyses acoustic emission signals captured during three-point bending fracture tests of alkali-activated slag mortar ...
Topolář Libor +3 more
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Energy Spectrum of Acoustic Emission Signals in Complex Media [PDF]
Журнал нано- та електронної фізики, 2017 A model of the energy spectrum of acoustic emission signals in complex structures with internal degrees of freedom is proposed. On the basis of the computational experiment of X-ray diffraction data, a quantum mechanical calculation of the applicability ...
V.V.В Marasanov, A.A.В Sharko
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Study on the tensile properties of sandstone with different water contents under freeze-thaw cycles
Gong-kuang zidonghua, 2023 Mines in cold regions of China are affected by freeze-thaw cycles, resulting in uneven expansion and contraction of rocks, leading to the formation of cracks. At the same time, the expansion of cracks due to water frost heave between cracks leads to rock
MIAO Haodong, REN Fuqiang
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Advances in Civil Engineering, 2022 Acoustic emission is a nondestructive testing technology based on the propagation of transient elastic waves captured by acoustic emission sensors. The acoustic emission signal depends not only on the distance and quality of the propagation path of the ...
Fen Liu +6 more
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Rock burst risk assessment of working face during open-off cut based on acoustic emission monitoring
Meikuang Anquan, 2021 Impact risk assessment is a work that must be carried out in driving and stoping stage in mining coal seam with impact risk to ensure the safety of driving and stoping working face.
XING Linnan
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