Integrating Singular Spectrum Analysis with Damage Detection of Structure

Siu Seong  Law; Kun Liu

doi:10.4028/www.scientific.net/KEM.569-570.831

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Damage Detection of a Substructure Based on Response Reconstruction in Frequency Domain
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Integrating Singular Spectrum Analysis with Damage Detection of Structure
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HomeKey Engineering MaterialsKey Engineering Materials Vols. 569-570Integrating Singular Spectrum Analysis with Damage...

Integrating Singular Spectrum Analysis with Damage Detection of Structure

Abstract:

The response sensitivity-based method for damage detection is integrated with the singular spectrum analysis (SSA) technique for an improvement of the identification results. The measured response of the structure is SSA decomposed, and the response sensitivity matrix as well as the computed response vectors are projected into the corresponding decomposition subspace to form the identification equations, and components containing the least measurement noise and most damage information can be selected to detect local damages in the structure. The proposed integrated approach is illustrated with a planar truss structure with discussions on the effectiveness of a single and multiple decomposed component of the measured response in the damage detection.

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Periodical:

Key Engineering Materials (Volumes 569-570)

Pages:

831-838

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.569-570.831

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Online since:

July 2013

Authors:

Siu Seong Law, Kun Liu

Keywords:

Damage Detection, Iteration, Noise, Projection, Regularization, Singular Spectrum Analysis

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