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rock shear rheological instrument was employed during the indentation process under disc cutters, and acoustic emission location system was used to analyze the rock damage and physical deterioration..., RYL-600 rock shear rheological instrument was modified and employed during the indentation process under TBM disc cutters. Acoustic emission location system was used to investigate rock damage......
Effects of sonic speed ??on location accuracy of acoustic emission source in rocks LI Qi-yue, DONG Long-jun, LI Xi-bing, YIN Zhi-qiang, LIU Xi-ling School of Resources and Safety Engineering... and plane location tests were carried out. A broken pencil was simulated as acoustic emission source in the rocks. The line and plane location tests were carried out in the granite rod using two sensors......
of the primary frequency content of the acoustic emission event[J]. Composites Science and Technology, 2004, 64(12): 1819-1827. [8] WOODWARD B. Identification of acoustic emission source mechanisms... Wavelet analysis of acoustic emission signals from thermal barrier coatings YANG Li(杨 丽), ZHOU Yi-chun(周益春) Key Laboratory for Advanced Materials and Rheological Properties of Ministry......
progressively propagated in an unstable manner, and eventually coalesced to form a splitting macro-crack failure. Fig. 3 Distribution of acoustic emission location in granite specimens with pre... be observed ahead of the face of the half-length cylindrical cavities. Fig. 6 Distribution of acoustic emission location in cuboid granite sample containing half-length cylindrical cavity with 20 mm......
Geology & the Environment, 2016, 76(1): 1-19. [4] ZHOU Zi-long, ZHOU Jing, DONG Long-jun, CAI Xin, RUI Yi-chao, KE Chang-tao. Experimental study on the location of an acoustic emission source... J. Cent. South Univ. (2019) 26: 2878-2890 DOI: https://doi.org/10.1007/s11771-019-4221-5 An improved joint method for onset picking of acoustic emission signals with noise ZHOU Zi-long(周子龙)1, CHENG......
EFFECT OF TOOL WEAR ON MICROSTRUCTURE, MECHANICAL PROPERTIES AND ACOUSTIC EMISSION OF FRICTION STIR WELDED 6061 Al ALLOY J. Zhang1,W.M. Zeng2,H.L. Wu2 (1.The University of Texas at El Paso... of welds.Tools with different pin-wear levels are used to weld 6061 Al alloy, while acoustic emission (AE) sensing, metallographic sectioning, and tensile testing are employed to evaluate the weld......
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Acoustic emission characteristics of rock under impact loadingLIU Xi-ling(刘希灵)1, 2, LI Xi-bing(李夕兵)1, HONG Liang(洪亮)3, YIN Tu-bing(尹土兵)1, RAO Meng(饶蒙)1(1. School of Resources and Safety Engineering... City University, Yiyang 413049, China)Abstract:Acoustic emission tests were performed using a split hopkinson pressure bar system (SHPB) on 50-mm-diameter bars of granite, limestone, sandstone and skarn......
Trans. Nonferrous Met. Soc. China 31(2021) 2468-2478 Influence of temperature on acoustic emission source location accuracy in underground structure Long-jun DONG, Qing TAO, Qing-chun HU School...: acoustic emission; temperature change; location accuracy; structural cracks 1 Introduction In the early 1950s, Kaiser’s research marked the beginning of modern acoustic emission (AE) technology. AE......
Trans. Nonferrous Met. Soc. China 22(2012) 2792-2798 Experimental studies on pillar failure characteristics based on acoustic emission location technique XU Shuai, LIU Jian-po, XU Shi-da, WEI Jiong...-spatial evolution; microracks; acoustic emission; location algorithm; quiet period 1 Introduction Rock is a typical inhomogeneous and anisotropic material, and contains several natural defects with various......