An Inversion Method Based on Inherent Similarity between Signals for Retrieving Source Mechanisms of Cracks

doi:10.3390/aerospace9110654

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	An Inversion Method Based on Inherent Similarity between Signals for Retrieving Source Mechanisms of Cracks
	Kong, Yue 5; Chen WM(陈伟民)3,4; Liu, Ning 2; Kang, Boqi 1; Li, Min 5
刊名	AEROSPACE
	2022-11-01
卷号	9 期号:11 页码:16
关键词	moment tensor crack acoustic emission correlation calculation aircraft
DOI	10.3390/aerospace9110654
通讯作者	Li, Min(limin@buaa.edu.cn)
英文摘要	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.
分类号	二类/Q1
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22000000] ; National Natural Science Foundation of China[41804134]
WOS关键词	MOMENT TENSOR INVERSION ; ACOUSTIC-EMISSION ; WAVE-FORMS ; MICROEARTHQUAKES ; EARTHQUAKES
WOS研究方向	Engineering
语种	英语
WOS记录号	WOS:000880696900001
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China
其他责任者	Li, Min
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/90756]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	1.Chinese Acad Sci, Technol & Engn Ctr Space Utilizat, Key Lab 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 100191, Peoples R China;
推荐引用方式 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.
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.