Characteristics of Structure Small Damage Detection under Strong Noise Background of Wavelet of Potter Syndrome-Reference-Cited by-同舟云学术

Characteristics of Structure Small Damage Detection under Strong Noise Background of Wavelet of Potter Syndrome

Published:2014-09 Issue: Volume:638-640 Page:27-31
ISSN:1662-7482
Container-title:Applied Mechanics and Materials
language:
Short-container-title:AMM

Author:

Zhao Lei¹,Zhang Yu²,Zhang Guo Qiang³

Affiliation:

1. Guizhou Construction Science Research and Design Institute Co. Ltd

2. North Western Polytechnical University

3. Urban Mass Transit Engineering Co. Ltd

Abstract

This paper presents a study on the effect of input noise on the detect index of structural damage. The main procedures include that, for some structures with small damage, the different dynamics response are obtained under the given input function and various input noise level, and then, the structural damage index is constructed using the energy spectrum of the sub-signal decomposed by wavelet analysis. Results show that the relationship between the different input noise level and the damage index is nonlinear, and some optimal signal/noise ratio can be found in order to obtain the most sensitive damage index to small structural damage.

Publisher

Trans Tech Publications, Ltd.

Link

https://www.scientific.net/AMM.638-640.27.pdf

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