Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Measurements of Dynamic Strain of Structures Using PVDF Films

PVDF 필름을 이용한 구조물의 동적 변형률 측정

  • Kim, Su-Min (Department of Safety Engineering, Pukyong National University) ;
  • Shin, Sung-Woo (Department of Safety Engineering, Pukyong National University) ;
  • Lee, Jae-Yong (Department of Architectural Engineering, Pukyong National University) ;
  • Kim, Nam-Sik (Department of Civil Engineering, Pusan National University)
  • Received : 2011.09.20
  • Accepted : 2011.12.12
  • Published : 2011.12.31
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Abstract

In this study, the applicability of PVDF films for measurements of dynamic strain in a structure was investigated. A relationship between the strain and the voltage response of a PVDF film was analytically derived. Free vibration test on a steel cantilever beam was performed and vibration response of the beam was measured both by a convential foil strain gauge and a PVDF film. Strain-voltage relationship obtained from the experiment was compared with the analytic relationship. Good agreement between the analytic and experimental relationships was observed. It was found that a tailored PVDF film can measure the dynamic strain of a structure as accurate as a conventional foil strain gauge.

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References

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