Investigation of the fracture modes of red sandstone using XFEM and acoustic emissions
文献类型：期刊论文
| 作者 | Wang, Hongjian1; Liu, Daan2; Cui, Zhendong2; Cheng, Cheng2; Jian, Zhou2 |
| 刊名 | THEORETICAL AND APPLIED FRACTURE MECHANICS
 |
| 出版日期 | 2016-10-01 |
| 卷号 | 85页码:283-293 |
| 关键词 | Rock Mechanics Fracture Experiments Xfem Acoustic Emission |
| DOI | 10.1016/j.tafmec.2016.03.012 |
| 文献子类 | Article |
| 英文摘要 | Acoustic emissions (AE) and stress strain curve analysis are accepted methods of analyzing crack propagation and monitoring various failure stages, including crack closure and the crack initiation level, during rock failure under brittle rock loading. This study designed a series of three-point bending tests and shear fracture tests to investigate the features of AE signals for different modes. The Extended Finite Element Method (XFEM) is also adopted to simulate these experiments processes. The obtained results indicate that the maximum load for the shear fracture mode is approximately three times larger than that for the tensile fracture mode and that the displacement in the shear fracture mode is also larger than that in the tensile fracture mode. AE signals had higher AF (average frequency) and lower Rise Angle (RA) (ratio of the rise time to the peak amplitude) values when tensile failure occurred, while they exhibited lower AF and higher RA values when shear failure occurred. Accumulative AE energy for the shear mode is significantly larger than that for type I tensile fracture. The influence of inhomogeneity is also evident, as signals acquired at different distances exhibit distinct characteristics. The results show that AE leads to the characterization of the dominant fracture mode using only two AE descriptors. Note that we also should reasonably arrange AE sensors to monitor large-scale projects in the field. (C) 2016 Elsevier Ltd. All rights reserved. |
| WOS关键词 | CONCRETE TEST METHOD ; DAMAGE EVALUATION ; CRACK DETECTION ; NDE TECHNIQUES ; ROCK ; RECOMMENDATION ; CLASSIFICATION ; COMPRESSION ; RESISTANCE ; GRANITE |
| WOS研究方向 | Engineering ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000386405500013 |
| 资助机构 | National Basic Research Program(22011CB201201) ; National Basic Research Program(22011CB201201) ; North China University of Water Resources and Electric Power High-level Scientific Research Funds(201532) ; North China University of Water Resources and Electric Power High-level Scientific Research Funds(201532) ; National Basic Research Program(22011CB201201) ; National Basic Research Program(22011CB201201) ; North China University of Water Resources and Electric Power High-level Scientific Research Funds(201532) ; North China University of Water Resources and Electric Power High-level Scientific Research Funds(201532) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53301]  |
| 专题 | 地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室 |
| 作者单位 | 1.North China Univ Water Resources & Elect Power, Zhengzhou 450045, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Hongjian,Liu, Daan,Cui, Zhendong,et al. Investigation of the fracture modes of red sandstone using XFEM and acoustic emissions[J]. THEORETICAL AND APPLIED FRACTURE MECHANICS,2016,85:283-293. |
| APA | Wang, Hongjian,Liu, Daan,Cui, Zhendong,Cheng, Cheng,&Jian, Zhou.(2016).Investigation of the fracture modes of red sandstone using XFEM and acoustic emissions.THEORETICAL AND APPLIED FRACTURE MECHANICS,85,283-293. |
| MLA | Wang, Hongjian,et al."Investigation of the fracture modes of red sandstone using XFEM and acoustic emissions".THEORETICAL AND APPLIED FRACTURE MECHANICS 85(2016):283-293. |
入库方式： OAI收割
来源：地质与地球物理研究所
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