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Spatial wavelet transform for damage detection in plate type structures

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Year: 2012
COI code: ISAV02_043
Paper Language: English

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Authors Spatial wavelet transform for damage detection in plate type structures

  Masoud Masoumi - School of Mechanical Engineering, Semnan University, P.O.Box 35195-363, Semnan, Iran
M. Ali Hajimousa -
M. Reza Ashory -
Fatemeh Joveini -


Vibration-based damage identification using wavelet transforms has come into focus due to its ability to overcome noise and provide results that are more reliable. Proposing varioustechniques to localize the damage site in the structures using wavelet transforms in conjunction with time or spatial vibration data, authors have proved that this state-of-the-art signalprocessing method is utilitarian and practical. In this paper, two techniques, called generalizedflexibility matrix (GFM) and uniform load surface (ULS), are used in conjunction with wavelet transform to find the location of the crack in a plate-type structure. GFM and ULS,which have been developed from flexibility matrix, are privileged in terms of lower participatingof higher order modes in comparison to original flexibility method. A plate structure is considered as a numerical case study and various damages with different sizes and locationsare induced. Two aforementioned flexibility based methods in conjunction with Symlet wavelet transform are utilized. Final outcomes present the location of damage


generalized flexibility matrix (GFM); uniform load surface (ULS); discrete wavelet transform (DWT)

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COI code: ISAV02_043

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Masoumi, Masoud; M. Ali Hajimousa; M. Reza Ashory & Fatemeh Joveini, 2012, Spatial wavelet transform for damage detection in plate type structures, 2nd International Conference on Acoustics and Vibration, تهران, دانشگاه صنعتي شريف, the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Masoumi, Masoud; M. Ali Hajimousa; M. Reza Ashory & Fatemeh Joveini, 2012)
Second and more: (Masoumi; Hajimousa; Ashory & Joveini, 2012)
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The University/Research Center Information:
Type: state university
Paper No.: 7486
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