Smart Structures and Systems

  • 제9권1호
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  • Pages.21-33
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  • 2012
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Damage localization in plate-like structure using built-in PZT sensor network

  • Liu, Xinglong (National Engineering Laboratory for System Integration of High Speed Train (South), CSR Qingdao Sifang, Co., Ltd.) ;
  • Zhou, Chengxu (Department of Mechanical Engineering, Engineering Faculty, Yamaguchi University) ;
  • Jiang, Zhongwei (Department of Mechanical Engineering, Engineering Faculty, Yamaguchi University)
  • 투고 : 2010.05.08
  • 심사 : 2011.11.08
  • 발행 : 2012.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

In this study, a Lamb-wave based damage detection approach is proposed for damage localization in plate. A sensor network consisting of three PZT wafer type actuators/sensors is used to generate and detect Lamb waves. To minimize the complication resulted from the multimode and dispersive characteristics of Lamb waves, the fundamental symmetric Lamb mode, $S_0$ is selectively generated through designing the excitation frequency of the narrowband input signal. A damage localization algorithm based upon the configuration of the PZT sensor network is developed. Time-frequency analysis method is applied to purify the raw signal and extract damage features. Experimental result obtained from aluminum plate verified the proposed damage localization approach.

키워드

참고문헌

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  9. Piezoelectricity in PbZrxTi1-xO3Studied by Density-Functional Perturbation Theory Supercell Calculations vol.52, pp.9R, 2013, https://doi.org/10.7567/JJAP.52.091101
  10. Damage evaluation and failure mechanism analysis of steel tube confined reinforced-concrete columns by acoustic emission technology vol.15, pp.11, 2018, https://doi.org/10.1590/1679-78255339
  11. Damage identification in multi-step waveguides using Lamb waves and scattering coefficients vol.88, pp.6, 2018, https://doi.org/10.1007/s00419-018-1355-0
  12. Identification of damage in composite structures using Gaussian mixture model-processed Lamb waves vol.27, pp.4, 2012, https://doi.org/10.1088/1361-665x/aaaf96