Moment-tensor inversion and decomposition for cracks in thin plates
文献类型：期刊论文
| 作者 | Kong, Yue5; Li, Min5 ; Chen, Weimin3,4; Liu, Ning2; Kang, Boqi1; Chen WM(陈伟民)
|
| 刊名 | CHINESE JOURNAL OF AERONAUTICS
 |
| 出版日期 | 2021-04-01 |
| 卷号 | 34期号:4页码:352-359 |
| 关键词 | Acoustic emission Fatigue Moment tensor Source mechanism Structural health monitoring Thin plate |
| ISSN号 | 1000-9361 |
| DOI | 10.1016/j.cja.2020.07.009 |
| 通讯作者 | Chen, Weimin(wmchen@imech.ac.cn) |
| 英文摘要 | The knowledge of crack type and dislocation orientation is helpful for the lifetime prediction of thin plates on aircrafts. The moment-tensor inversion utilizes the Acoustic Emission (AE) signals to detect cracks and the source mechanisms can be interpreted by the decomposition of moment tensors. Since the traditional moment-tensor inversion is implemented for the AE sources inside infinite elastic bodies, the inversion needs to be modified for the cracks in thin plates. In this study, the moment tensors of cracks in thin plates are derived and the inversion equation is provided based on the Green & rsquo;s function of second kind. A method of modifying the moment tensors to adapt to the existing decomposition processes and source-type plots is provided. By employing the Finite Element Method (FEM), the wave fields generated by the AE sources are computed. The AE sources continuously changing from pure tensile type (Model I) to shear type (Model II) are achieved in the FE models and the moment tensors are recovered. By the comparison between the reference values and recovered solutions, the source type can be accurately identified in the source-type plot and the applicability of the moment-tensor inversion for cracks in thin plates is confirmed. (c) 2020 Chinese Society of Aeronautics and Astronautics. Production and hosting by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
| WOS关键词 | ACOUSTIC-EMISSION ; GROWTH ; PROPAGATION ; DISPERSION ; STABILITY ; STEEL |
| 资助项目 | Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22000000] ; National Natural Science Foundation of China[41804134] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000641055600003 |
| 资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/86605]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 通讯作者 | Chen, Weimin |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Space Utilizat, Technol & Engn Ctr Space Utilizat, Beijing 100094, Peoples R China 2.Beijing Univ Chem Technol, Coll Mech & Elect Engn, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 5.Beihang Univ, Sch Aeronaut Sci & Engn, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kong, Yue,Li, Min,Chen, Weimin,et al. Moment-tensor inversion and decomposition for cracks in thin plates[J]. CHINESE JOURNAL OF AERONAUTICS,2021,34(4):352-359. |
| APA | Kong, Yue,Li, Min,Chen, Weimin,Liu, Ning,Kang, Boqi,&陈伟民.(2021).Moment-tensor inversion and decomposition for cracks in thin plates.CHINESE JOURNAL OF AERONAUTICS,34(4),352-359. |
| MLA | Kong, Yue,et al."Moment-tensor inversion and decomposition for cracks in thin plates".CHINESE JOURNAL OF AERONAUTICS 34.4(2021):352-359. |
入库方式： OAI收割
来源：力学研究所
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