Acoustic emission characteristics of pre-cracked specimens under biaxial compression
文献类型：期刊论文
| 作者 | Liu, Xuewei; Liu, Quansheng; Liu, Bin; Liu, Qi |
| 刊名 | JOURNAL OF GEOPHYSICS AND ENGINEERING
 |
| 出版日期 | 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 |
| 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 国家重点实验室知识产出_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. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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