Damage Detection of Structures using Transfer Function and its Singular Values

Document Type : Research Article

Authors

1 Civil Engineering Department, Sharif University of Technology, Tehran, Iran

2 Marine Engineering Department, Amirkabir University of Technology, Tehran, Iran

Abstract

 In this paper, the application of Singular Variable Decomposition (SVD)-based principal component analysis (PCA) performed on truncated form of transfer function is demonstrated. Damage scenarios with light severity and distributed locations could be detected, localized and quantified using a one-step model updating. In many cases, it enhances the capability of FRF-based model updating with the presence of high noise levels and much less updating data. A numerical simulation on a truss has been validated to show the ability of this technique for damage detection.

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References

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Amirkabir Journal of Civil Engineering
Volume 50, Issue 6
March and April 2019
Pages 1071-1080

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