Improvement of Accuracy in Damage Localization Using Frequency Slice Wavelet Transform
Damage localization is a primary objective of damage identification. This paper presents damage localization in beam structure using impact-induced Lamb wave and Frequency Slice Wavelet Transform (FSWT). FSWT is a new time-frequency analysis method and has the adaptive resolution feature. The time-f...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2012-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.3233/SAV-2011-0652 |
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| _version_ | 1832565434904215552 |
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| author | Xinglong Liu Zhongwei Jiang Zhonghong Yan |
| author_facet | Xinglong Liu Zhongwei Jiang Zhonghong Yan |
| author_sort | Xinglong Liu |
| collection | DOAJ |
| description | Damage localization is a primary objective of damage identification. This paper presents damage localization in beam structure using impact-induced Lamb wave and Frequency Slice Wavelet Transform (FSWT). FSWT is a new time-frequency analysis method and has the adaptive resolution feature. The time-frequency resolution is a vital factor affecting the accuracy of damage localization. In FSWT there is a unique parameter controlling the time-frequency resolution. To improve the accuracy of damage localization, a generalized criterion is proposed to determine the parameter value for achieving a suitable time-frequency resolution. For damage localization, the group velocity dispersion curve (GVDC) of A0 Lamb waves in beam is first accurately estimated using FSWT, and then the arrival times of reflection wave from the crack for some individual frequency components are determined. An average operation on the calculated propagation distance is then performed to further improve the accuracy of damage localization. |
| format | Article |
| id | doaj-art-2ef096a1a6aa4205a284e2b3537706d3 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-2ef096a1a6aa4205a284e2b3537706d32025-02-03T01:07:47ZengWileyShock and Vibration1070-96221875-92032012-01-0119458559610.3233/SAV-2011-0652Improvement of Accuracy in Damage Localization Using Frequency Slice Wavelet TransformXinglong Liu0Zhongwei Jiang1Zhonghong Yan2National Engineering Laboratory for System Integration of High Speed Train (south), CSR Qingdao Sifang Co. Ltd, Qingdao, ChinaDepartment of Mechanical Engineering, Engineering Faculty, Yamaguchi University, Ube, JapanBiomedical Department, Chongqing University of Technology, Chongqing, ChinaDamage localization is a primary objective of damage identification. This paper presents damage localization in beam structure using impact-induced Lamb wave and Frequency Slice Wavelet Transform (FSWT). FSWT is a new time-frequency analysis method and has the adaptive resolution feature. The time-frequency resolution is a vital factor affecting the accuracy of damage localization. In FSWT there is a unique parameter controlling the time-frequency resolution. To improve the accuracy of damage localization, a generalized criterion is proposed to determine the parameter value for achieving a suitable time-frequency resolution. For damage localization, the group velocity dispersion curve (GVDC) of A0 Lamb waves in beam is first accurately estimated using FSWT, and then the arrival times of reflection wave from the crack for some individual frequency components are determined. An average operation on the calculated propagation distance is then performed to further improve the accuracy of damage localization.http://dx.doi.org/10.3233/SAV-2011-0652 |
| spellingShingle | Xinglong Liu Zhongwei Jiang Zhonghong Yan Improvement of Accuracy in Damage Localization Using Frequency Slice Wavelet Transform Shock and Vibration |
| title | Improvement of Accuracy in Damage Localization Using Frequency Slice Wavelet Transform |
| title_full | Improvement of Accuracy in Damage Localization Using Frequency Slice Wavelet Transform |
| title_fullStr | Improvement of Accuracy in Damage Localization Using Frequency Slice Wavelet Transform |
| title_full_unstemmed | Improvement of Accuracy in Damage Localization Using Frequency Slice Wavelet Transform |
| title_short | Improvement of Accuracy in Damage Localization Using Frequency Slice Wavelet Transform |
| title_sort | improvement of accuracy in damage localization using frequency slice wavelet transform |
| url | http://dx.doi.org/10.3233/SAV-2011-0652 |
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