INFLUENCE OF THE ANISOTROPIC CHARACTERISTIC ON THE ACCURACY OF ACOUSTIC EMISSION SOURCE LOCALIZATION WITH L SHAPED SENSOR CLUSTER

Jiaying Sun, Zexing Yu, Chao Xu

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

Composite materials are increasingly being used in the structure of aircraft. However, this type of materials is commonly encountering damage companied with acoustic emission (AE) events. In order to ensure the safety of structures during service, it is urgent to develop structural health monitoring methods able to localize AE source in composite components as they occur. Kundu et al [1] for the first time proposed a technique using L-shaped clusters to localize AE source in anisotropic plates without knowing the pre-defined velocity. However, the direction dependent group velocity may lead to a large error if the group velocities in some anisotropic materials vary widely. In this paper, whether the characteristic of anisotropy has a great influence on the localization results and the principle of how this characteristic affects the AE source localization results are investigated. The results show that localization results of isotropic plate are obviously better than that of anisotropic plate due to the direction dependent velocities of anisotropic plate, which proves that the characteristic of anisotropy will affect AE source localization results. It is also found that the variation of localization orientation error is consistent with the local velocity gradient.

源语言英语
主期刊名Dynamics, Vibration, and Control
出版商American Society of Mechanical Engineers (ASME)
ISBN(电子版)9780791886670
DOI
出版状态已出版 - 2022
活动ASME 2022 International Mechanical Engineering Congress and Exposition, IMECE 2022 - Columbus, 美国
期限: 30 10月 20223 11月 2022

出版系列

姓名ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
5

会议

会议ASME 2022 International Mechanical Engineering Congress and Exposition, IMECE 2022
国家/地区美国
Columbus
时期30/10/223/11/22

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