Identification of Surface Crack in Steel Rods Using Wavelet Transform Modulus Maximum on Vibration Mode

Hong Chun Sun; Ling Ling Zhang; Bei Ming Zhao

doi:10.4028/www.scientific.net/AMM.532.457

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 532Identification of Surface Crack in Steel Rods...

Identification of Surface Crack in Steel Rods Using Wavelet Transform Modulus Maximum on Vibration Mode

Abstract:

The traditional identification method of surface crack has some shortcomings such as detection equipment complex, high requirements for operator and not suitable for large-scale structure inspection, vibration method is applied to identify surface crack in steel rods in this paper, using the method of calculating modal analysis combined with time-frequency wavelet analysis. The research on damage identification is performed on steel rods with different deep crack. The research results show that the accurate damage location can be judged by wavelet modulus maximum and the quantitative analysis of single crack identification can be achieved by constructing mathematical expressions of a single crack damage degree and damage index Lipschitz index. The research would province some guidance for engineering applications.

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Periodical:

Applied Mechanics and Materials (Volume 532)

Pages:

457-460

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.532.457

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Online since:

February 2014

Authors:

Hong Chun Sun*, Ling Ling Zhang, Bei Ming Zhao

Keywords:

Modulus Maximum, Steel Rod, Surface Crack, Vibration Mode, Wavelet Transform (WT)

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* - Corresponding Author

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