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Damage Detection in a Bean Via the Wavelet Transform of Mode Shapes

모드형상의 웨이블렛 변환을 이용한 보의 결함 진단

Lee, Yong-Uk;Kim, Yun-Yeong;Lee, Ho-Cheol
이용욱;김윤영;이호철

  • Published : 2000.04.01

Abstract

Perhaps, this is the first attempt which applies the wavelet transform to the fundamental vibration mode for damage detection in a beam. Contrary to most existing detection methods on mode shapes, the present method directly works only with the fundamental mode of a damaged beam: no vibration mode shape of a undamaged beam is necessary. Applying the concept of vanishing moments of wavelet functions, we show that wavelet functions are effective damage detectors. Both numerical and experimental results confirm the effectiveness of the present method

Keywords

Damage Detection;Mode Shapes;Wavelet

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