The Research of Civil Structural Damage Identification Based on Lifting Wavelet Entropy Index

Zeng Shou Sun; Ke Ju Fan; Xu Guang Yin; Peng Jie Han

doi:10.4028/www.scientific.net/AMR.291-294.2041

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 291-294The Research of Civil Structural Damage...

The Research of Civil Structural Damage Identification Based on Lifting Wavelet Entropy Index

Abstract:

The failure of civil engineering structure will lead to heavy losses. So, identifying structural damage is necessary as early as possible. The excellent localization performance of lifting wavelet transform will facilitate significantly damage diagnosis. On the base of wavelet energy distribution of structural acceleration response, taking advantage of characteristics of lifting wavelet and entropy, the structural damage identification method based on lifting wavelet entropy is proposed in this paper. And the lifting wavelet time entropy index and the relative lifting wavelet entropy index are established. The new method and damage indexes are verified in numerical simulation and laboratory test of simple beam. The analysis results show that lifting wavelet time entropy can identify structural damage moment and the relative lifting wavelet entropy can identify structural damage location. The feasibility of method proposed is instructed.

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Periodical:

Advanced Materials Research (Volumes 291-294)

Pages:

2041-2048

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.291-294.2041

Citation:

Cite this paper

Online since:

July 2011

Authors:

Zeng Shou Sun, Ke Ju Fan, Xu Guang Yin, Peng Jie Han

Keywords:

Lifting Wavelet, Lifting Wavelet Time Entropy, Relative Lifting Wavelet Entropy, Simple Beam, Structural Damage Identification, Structural Health Monitoring (SHM)

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