| Moment-tensor inversion and decomposition for cracks in thin plates | |
Kong, Yue1; Li, Min1 ; Chen WM(陈伟民)2,3; Liu, Ning4; Kang, Boqi5
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| Corresponding Author | Chen, Weimin([email protected]) |
| Source Publication | CHINESE JOURNAL OF AERONAUTICS
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| 2021-04-01 | |
| Volume | 34Issue:4Pages:352-359 |
| ISSN | 1000-9361 |
| Abstract | 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/). |
| Keyword | Acoustic emission Fatigue Moment tensor Source mechanism Structural health monitoring Thin plate |
| DOI | 10.1016/j.cja.2020.07.009 |
| Indexed By | SCI ; EI ; CSCD |
| Language | 英语 |
| WOS ID | WOS:000641055600003 |
| WOS Keyword | ACOUSTIC-EMISSION ; GROWTH ; PROPAGATION ; DISPERSION ; STABILITY ; STEEL |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Aerospace |
| Funding Project | Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22000000] ; National Natural Science Foundation of China[41804134] |
| Funding Organization | Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Contributor | Chen, Weimin |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/86606 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.Beihang Univ, Sch Aeronaut Sci & Engn, Beijing 100083, Peoples R China; 2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 4.Beijing Univ Chem Technol, Coll Mech & Elect Engn, Beijing 100029, Peoples R China; 5.Chinese Acad Sci, Key Lab Space Utilizat, Technol & Engn Ctr Space Utilizat, Beijing 100094, Peoples R China |
| Recommended Citation GB/T 7714 | Kong, Yue,Li, Min,Chen WM,et al. Moment-tensor inversion and decomposition for cracks in thin plates[J]. CHINESE JOURNAL OF AERONAUTICS,2021,34,4,:352-359.Rp_Au:Chen, Weimin |
| APA | Kong, Yue,Li, Min,陈伟民,Liu, Ning,&Kang, Boqi.(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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2021206.pdf（1032KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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