2017
DOI: 10.1088/1361-665x/aa7220
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Online damage detection using recursive principal component analysis and recursive condition indicators

Abstract: In this paper, a novel baseline free approach for continuous online damage detection of multi degree of freedom vibrating structures using recursive principal component analysis (RPCA) in conjunction with online damage indicators is proposed. In this method, the acceleration data is used to obtain recursive proper orthogonal modes in online using the rank-one perturbation method, and subsequently utilized to detect the change in the dynamic behavior of the vibrating system from its pristine state to contiguous… Show more

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Cited by 21 publications
(50 citation statements)
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“…The updates W k = W k 1 Q k and Ω k = Λ k / k can be estimated through an iterative calculation of Q k and Λ k as discussed in an associated study. 29 In this regard, the authors have resorted to the use of matrix inversion lemma 50 that can provide the inverse of any full-rank positive definite matrix. The inverse EVD at the ( k + 1 ) th step, therefore, becomes…”
Section: Recursive Ccamentioning
confidence: 99%
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“…The updates W k = W k 1 Q k and Ω k = Λ k / k can be estimated through an iterative calculation of Q k and Λ k as discussed in an associated study. 29 In this regard, the authors have resorted to the use of matrix inversion lemma 50 that can provide the inverse of any full-rank positive definite matrix. The inverse EVD at the ( k + 1 ) th step, therefore, becomes…”
Section: Recursive Ccamentioning
confidence: 99%
“…Krishnan et al 29 proposed a recursive principal component analysis (RPCA)-based online damage detection algorithm employing FOEP techniques to obtain updates for eigenspace at each time instant when a new data sample is received. The method inherently embodies a model order reduction scheme that makes it computationally efficient.…”
Section: Introductionmentioning
confidence: 99%
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