Smart Structures and Systems

  • 제11권2호
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  • Pages.217-240
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  • 2013
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Damage detection in beam-type structures via PZT's dual piezoelectric responses

  • Nguyen, Khac-Duy (Department of Ocean Engineering, Pukyong National University) ;
  • Ho, Duc-Duy (Faculty of Civil Engineering, Ho Chi Minh City University of Technology) ;
  • Kim, Jeong-Tae (Department of Ocean Engineering, Pukyong National University)
  • 투고 : 2011.11.09
  • 심사 : 2012.12.01
  • 발행 : 2013.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

In this paper, practical methods to utilize PZT's dual piezoelectric effects (i.e., dynamic strain and electro-mechanical (E/M) impedance responses) for damage detection in beam-type structures are presented. In order to achieve the objective, the following approaches are implemented. Firstly, PZT material's dual piezoelectric characteristics on dynamic strain and E/M impedance are investigated. Secondly, global vibration-based and local impedance-based methods to detect the occurrence and the location of damage are presented. Finally, the vibration-based and impedance-based damage detection methods using the dual piezoelectric responses are evaluated from experiments on a lab-scaled beam for several damage scenarios. Damage detection results from using PZT sensor are compared with those obtained from using accelerometer and electric strain gauge.

키워드

과제정보

연구 과제 주관 기관 : National Research Foundation of Korea (NRF)

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