THE NONDESTRUCTIVE FAULT DETECTION OF THE SANDWICH PANEL BY WAVELET ANALYSIS

Zha Xiaoxiong; Ye Fuxiang

doi:10.13204/j.gyjz201103008

Volume 41 Issue 3

Dec. 2014

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Zha Xiaoxiong, Ye Fuxiang. THE NONDESTRUCTIVE FAULT DETECTION OF THE SANDWICH PANEL BY WAVELET ANALYSIS[J]. INDUSTRIAL CONSTRUCTION, 2011, 41(3): 46-51. doi: 10.13204/j.gyjz201103008

Citation:

Zha Xiaoxiong, Ye Fuxiang. THE NONDESTRUCTIVE FAULT DETECTION OF THE SANDWICH PANEL BY WAVELET ANALYSIS[J]. INDUSTRIAL CONSTRUCTION, 2011, 41(3): 46-51. doi: 10.13204/j.gyjz201103008

Zha Xiaoxiong, Ye Fuxiang. THE NONDESTRUCTIVE FAULT DETECTION OF THE SANDWICH PANEL BY WAVELET ANALYSIS[J]. INDUSTRIAL CONSTRUCTION, 2011, 41(3): 46-51. doi: 10.13204/j.gyjz201103008

Citation:

Zha Xiaoxiong, Ye Fuxiang. THE NONDESTRUCTIVE FAULT DETECTION OF THE SANDWICH PANEL BY WAVELET ANALYSIS[J]. INDUSTRIAL CONSTRUCTION, 2011, 41(3): 46-51. doi: 10.13204/j.gyjz201103008

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THE NONDESTRUCTIVE FAULT DETECTION OF THE SANDWICH PANEL BY WAVELET ANALYSIS

doi: 10.13204/j.gyjz201103008

1.
Shenzhen Graduate School,Harbin Institute of Technology,Shenzhen 518055,China

Received Date: 2010-10-25
Publish Date: 2011-03-20

Abstract

Abstract

As a kind of new-style building insulation material,sandwich panel is widely applied step by step in all kinds of industrial and civil architectures.In this paper,the ultrasonic non-destructive testing method was used to detect the possible damage of sandwich panel in normal use,and the wavelet analysis technique was used to precede a soft threshold de-noising treatment to the ultrasonic echo signal,then the de-noised ultrasonic echo signal was decomposed and the local modulus maxima of each layer was got.The results show that: after wavelet de-noising and wavelet decomposition,through identifying the arrival time of the reflected echo signal and the change of the various layerswaveform of the wavelet decomposition,the ultrasonic non-destructive testing method can effectively identify various types of damages.
- metal faced sandwich panel,
- non-destructive testing,
- wavelet analysis

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References

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