Acoustic emission characteristics of pre-cracked specimens under biaxial compression

doi:10.1093/jge/gxz087

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Acoustic emission characteristics of pre-cracked specimens under biaxial compression
	Liu, Xuewei ; Liu, Quansheng ; Liu, Bin ; Liu, Qi
刊名	JOURNAL OF GEOPHYSICS AND ENGINEERING
	2019
卷号	16 期号:6 页码:1164-1177
关键词	acoustic emission rock-like material AE energy b-value biaxial compression
ISSN号	1742-2132
DOI	10.1093/jge/gxz087
英文摘要	This paper presents an experimental study in which molded gypsum pre-cracked specimens with two types of flaw (single and X-shaped cross flaws) were tested under biaxial compression. Results show that acoustic emission (AE) energy rate curves can be divided into three different periods during uniaxial compression, which correspond to crack closure, linear elastic and unstable failure stages of specimens. However, only two periods are observed during biaxial compression, which correspond to linear elastic deformation and unstable failure. Furthermore, two proposed AE parameters, namely the AE energy ratio and AE energy release ratio, and a classical AE parameter b-value were used to analyze the influence of biaxial compression loading on AE energy, respectively. With increasing confining pressure, the AE energy release ratio, as well as AE b-value decreases gradually while AE energy ratio increases. Moreover, maximum and average AE energy rate values decrease as confining pressure increases. Data presented herein is useful to study the AE characteristics of pre-cracked specimens under biaxial compression.
WOS研究方向	Geochemistry & Geophysics
语种	英语
WOS记录号	WOS:000501744000012
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/14804]
专题	岩土力学所知识全产出_期刊论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China; 2.Monash Univ, Dept Civil Engn, Clayton, Vic 3800, Australia; 3.Wuhan Univ, Key Lab Safety Geotech & Struct Engn Hubei Prov, Sch Civil Engn, Wuhan 430072, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xuewei,Liu, Quansheng,Liu, Bin,et al. Acoustic emission characteristics of pre-cracked specimens under biaxial compression[J]. JOURNAL OF GEOPHYSICS AND ENGINEERING,2019,16(6):1164-1177.
APA	Liu, Xuewei,Liu, Quansheng,Liu, Bin,&Liu, Qi.(2019).Acoustic emission characteristics of pre-cracked specimens under biaxial compression.JOURNAL OF GEOPHYSICS AND ENGINEERING,16(6),1164-1177.
MLA	Liu, Xuewei,et al."Acoustic emission characteristics of pre-cracked specimens under biaxial compression".JOURNAL OF GEOPHYSICS AND ENGINEERING 16.6(2019):1164-1177.