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Application of the Higher Modes to Crack Identification in a Cantilever Beam

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Abstract:

Damage detection by the wavelet transform of the fundamental vibration mode receives much attention recently. However, the higher vibration modes were hardly discussed in past literatures. As we know they are more sensitive to the crack comparing with the fundamental mode, which bring abundant damage information. The objective of this study is to show that the first four modes are available using wavelet transform for crack parameter identification. Specially, using the higher mode could result in an excellent quality of crack identification when the mode data was contaminated by noise. But too higher modes have possibly adverse effects on the quality of crack detection.

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Periodical:

Key Engineering Materials (Volume 347)

Pages:

595-600

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.347.595

Citation:

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Online since:

September 2007

Authors:

Yu Xiang Liu, Wei Wei Zhang, Hong Wei Ma

Keywords:

Cantilever Beam, Crack, Damage Detection, Wavelet Analysis

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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