Lamb Wave Directional Sensing with Piezoelectric Fiber Rosette in Structure Health Monitoring
Directional piezoelectric sensors can detect the Lamb wave propagation direction to locate damage in structural health monitoring (SHM). The directivity of the round piezoelectric fiber is exploited with a 0°/45°/90° rosette configuration to acquire flexural Lamb wave signals. The directional respon...
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2019-01-01
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Series: | Shock and Vibration |
Online Access: | http://dx.doi.org/10.1155/2019/6189290 |
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doaj-10cb7bbb5d564424a374fe578dc5b0242020-11-24T21:30:43ZengHindawi LimitedShock and Vibration1070-96221875-92032019-01-01201910.1155/2019/61892906189290Lamb Wave Directional Sensing with Piezoelectric Fiber Rosette in Structure Health MonitoringSonglai Wang0Wanrong Wu1Yiping Shen2Hui Li3Binlong Tang4College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, ChinaCollege of Mechanical and Electrical Engineering, Central South University, Changsha 410083, ChinaHunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment, Hunan University of Science and Technology, Xiangtan 411201, ChinaHunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment, Hunan University of Science and Technology, Xiangtan 411201, ChinaHunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment, Hunan University of Science and Technology, Xiangtan 411201, ChinaDirectional piezoelectric sensors can detect the Lamb wave propagation direction to locate damage in structural health monitoring (SHM). The directivity of the round piezoelectric fiber is exploited with a 0°/45°/90° rosette configuration to acquire flexural Lamb wave signals. The directional response of the piezoelectric fiber under narrowband tone-burst excitation is theoretically deduced. Experimental tests are conducted to demonstrate the directivity and the frequency response property of the piezoelectric fiber under different excitation central frequencies in comparison with the MFC, rectangular piezoelectric sheet, and circular piezoelectric disc. Continuous wavelet transform (CWT) is applied to extract the maximum response amplitude information of the acquired Lamb wave signal at a central frequency. Experimental test results indicate that the piezoelectric fiber is capable to be used as a Lamb wave directional sensor than other piezoelectric sensors. A numerical estimation method for the Lamb wave propagation direction is proposed by defining an error function between the theoretical and experimental normalized response amplitude. The proposed method is generally applicable for different rosette configurations. Experimental results validate the accuracy of the proposed estimation method. The research results are significant to design or select the piezoelectric sensor to measure Lamb wave signals.http://dx.doi.org/10.1155/2019/6189290 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Songlai Wang Wanrong Wu Yiping Shen Hui Li Binlong Tang |
spellingShingle |
Songlai Wang Wanrong Wu Yiping Shen Hui Li Binlong Tang Lamb Wave Directional Sensing with Piezoelectric Fiber Rosette in Structure Health Monitoring Shock and Vibration |
author_facet |
Songlai Wang Wanrong Wu Yiping Shen Hui Li Binlong Tang |
author_sort |
Songlai Wang |
title |
Lamb Wave Directional Sensing with Piezoelectric Fiber Rosette in Structure Health Monitoring |
title_short |
Lamb Wave Directional Sensing with Piezoelectric Fiber Rosette in Structure Health Monitoring |
title_full |
Lamb Wave Directional Sensing with Piezoelectric Fiber Rosette in Structure Health Monitoring |
title_fullStr |
Lamb Wave Directional Sensing with Piezoelectric Fiber Rosette in Structure Health Monitoring |
title_full_unstemmed |
Lamb Wave Directional Sensing with Piezoelectric Fiber Rosette in Structure Health Monitoring |
title_sort |
lamb wave directional sensing with piezoelectric fiber rosette in structure health monitoring |
publisher |
Hindawi Limited |
series |
Shock and Vibration |
issn |
1070-9622 1875-9203 |
publishDate |
2019-01-01 |
description |
Directional piezoelectric sensors can detect the Lamb wave propagation direction to locate damage in structural health monitoring (SHM). The directivity of the round piezoelectric fiber is exploited with a 0°/45°/90° rosette configuration to acquire flexural Lamb wave signals. The directional response of the piezoelectric fiber under narrowband tone-burst excitation is theoretically deduced. Experimental tests are conducted to demonstrate the directivity and the frequency response property of the piezoelectric fiber under different excitation central frequencies in comparison with the MFC, rectangular piezoelectric sheet, and circular piezoelectric disc. Continuous wavelet transform (CWT) is applied to extract the maximum response amplitude information of the acquired Lamb wave signal at a central frequency. Experimental test results indicate that the piezoelectric fiber is capable to be used as a Lamb wave directional sensor than other piezoelectric sensors. A numerical estimation method for the Lamb wave propagation direction is proposed by defining an error function between the theoretical and experimental normalized response amplitude. The proposed method is generally applicable for different rosette configurations. Experimental results validate the accuracy of the proposed estimation method. The research results are significant to design or select the piezoelectric sensor to measure Lamb wave signals. |
url |
http://dx.doi.org/10.1155/2019/6189290 |
work_keys_str_mv |
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1725962063577088000 |