The role of prior creep duration on the acoustic emission characteristics of rock salt under cyclic loading
文献类型：期刊论文
| 作者 | Zhao, Kai1,2,3; Ma, Hongling1,2,3; Yang, Chunhe1,2,3; Daemen, J. J. K.4 |
| 刊名 | INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
 |
| 出版日期 | 2022-09-01 |
| 卷号 | 157期号:-页码:- |
| 关键词 | Rock salt Acoustic emission Cyclic loading Parameter analysis |
| ISSN号 | 1365-1609 |
| 英文摘要 | This study aimed to investigate the acoustic emission (AE) behavior of rock salt under combined creep and fa-tigue. The loading path was in a stress-controlled mode and contained a constant stress load with different durations, followed by cyclic loading. The AE counts, peak frequency, amplitude, b-value, and RA (rise time/ amplitude)-AF (average frequency) distribution were systematically analyzed. The results show that the AE counts gradually increased during loading and existed sporadically within the prior creep stage and frequently in the subsequent cyclic loading phase. The peak frequency exhibited a zonal distribution and was divided into low, medium, and high parts. A longer prior creep duration induced a wider frequency distribution range, a higher average amplitude, and a reduction in b-value. According to the RA-AF distribution, the tensile cracks constituted more than 90% of the total cracks, and the prior creep duration decreased the shear crack propagation compared with the cases without prior creep. The results indicate that prior creep increases the crack dimensions and damage severity and makes the salt sample prone to fracture in the subsequent cyclic loading. |
| 学科主题 | Engineering ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000841308000002 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35273]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, 430071, China 2.University of Chinese Academy of Sciences, Beijing, 100049, China 3.Hubei Key Laboratory of Geo-Environmental Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, 430071, China 4.Mackay School of Earth Sciences and Engineering, University of Nevada, Reno, NV, 89557, USA |
| 推荐引用方式 GB/T 7714 | Zhao, Kai,Ma, Hongling,Yang, Chunhe,et al. The role of prior creep duration on the acoustic emission characteristics of rock salt under cyclic loading[J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,2022,157(-):-. |
| APA | Zhao, Kai,Ma, Hongling,Yang, Chunhe,&Daemen, J. J. K..(2022).The role of prior creep duration on the acoustic emission characteristics of rock salt under cyclic loading.INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,157(-),-. |
| MLA | Zhao, Kai,et al."The role of prior creep duration on the acoustic emission characteristics of rock salt under cyclic loading".INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES 157.-(2022):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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