Application of Wavelet Packet Analysis in Damage Alarming for Steel-Frame Structure

Ning Zhang; Zhuo Bin Wei; Zi Wang; Sen Wu

doi:10.4028/www.scientific.net/AMM.204-208.2883

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 204-208Application of Wavelet Packet Analysis in Damage...

Application of Wavelet Packet Analysis in Damage Alarming for Steel-Frame Structure

Abstract:

The method of damage alarming based on wavelet packet analysis which applied on steel-frame structure is researched. Firstly, the method of damage identification based on wavelet packet analysis is introduced. Secondly, in view of the dependability of the method on the excitation, virtual impulse response function is brought in to enhance robustness of the method to the excitation. Lastly, through the steel-frame structure experimentation of damage alarming, the two damage modes of the structure are identified by the method based on wavelet packet energy spectrum. The experimentation results show that the effect of damage alarming to the steel-frame structure is completely obvious by wavelet packet analysis. Accordingly, this method has much application value for engineering.

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Periodical:

Applied Mechanics and Materials (Volumes 204-208)

Pages:

2883-2886

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.204-208.2883

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Online since:

October 2012

Authors:

Ning Zhang*, Zhuo Bin Wei, Zi Wang, Sen Wu

Keywords:

Damage Alarming, Steel-Frame Structure, Wavelet Analysis, Wavelet Packet Energy Spectrum

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* - Corresponding Author

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