| An Inversion Method Based on Inherent Similarity between Signals for Retrieving Source Mechanisms of Cracks | |
Kong, Yue1; Chen WM(陈伟民)2,3 ; Liu, Ning4; Kang, Boqi5; Li, Min1
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| Corresponding Author | Li, Min([email protected]) |
| Source Publication | AEROSPACE
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| 2022-11-01 | |
| Volume | 9Issue:11Pages:16 |
| Abstract | The knowledge of cracking mechanisms is significant for evaluating the healthy condition of aircraft structures and can be retrieved by moment tensor inversion based on the acoustic emission (AE) phenomenon. For engineering applications, the inversion method cannot compute accurate results because the waveforms recorded by sensors are commonly contaminated by noise. Consequently, the correlation calculation of de-noising is introduced into the inversion and sufficient correlation functions are needed. In this paper, the correlation function of raw waveforms is proposed and based on the inherent similarity between the signals induced by one source and recorded by different sensors. According to the synthetic tests, the error of the inversion method based on the new correlation function is approximately 1/10 of that of the commonly used amplitude method. Although the inversion accuracy is influenced by the phase differences and the ratio of noise frequency to signal frequency, the influence is limited and the new correlation function is suitable for most practical cases. The inversion method based on the new correlation function does not require the knowledge of noise spectra or any complex calculation processes and provides a new way to improve the inversion accuracy of cracking mechanisms with little additional computation consumption. |
| Keyword | moment tensor crack acoustic emission correlation calculation aircraft |
| DOI | 10.3390/aerospace9110654 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000880696900001 |
| WOS Keyword | MOMENT TENSOR INVERSION ; ACOUSTIC-EMISSION ; WAVE-FORMS ; MICROEARTHQUAKES ; EARTHQUAKES |
| 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 | 2 |
| Contributor | Li, Min |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/90757 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.Beihang Univ, Sch Aeronaut Sci & Engn, Beijing 100191, 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, Technol & Engn Ctr Space Utilizat, Key Lab Space Utilizat, Beijing 100094, Peoples R China |
| Recommended Citation GB/T 7714 | Kong, Yue,Chen WM,Liu, Ning,et al. An Inversion Method Based on Inherent Similarity between Signals for Retrieving Source Mechanisms of Cracks[J]. AEROSPACE,2022,9,11,:16.Rp_Au:Li, Min |
| APA | Kong, Yue,陈伟民,Liu, Ning,Kang, Boqi,&Li, Min.(2022).An Inversion Method Based on Inherent Similarity between Signals for Retrieving Source Mechanisms of Cracks.AEROSPACE,9(11),16. |
| MLA | Kong, Yue,et al."An Inversion Method Based on Inherent Similarity between Signals for Retrieving Source Mechanisms of Cracks".AEROSPACE 9.11(2022):16. |
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| Jp2022FA101_2022_An （4002KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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