11 April 2006 Damage detection with spatially distributed 2D continuous wavelet transform
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The response of a structure is usually modified when the structure is damaged, especially in the vicinity of the damaged zones. Such local perturbations are generally very small but they can be detected using wavelet transform techniques. To this end, a distributed two-dimensional Continuous Wavelet Transform (2D CWT) algorithm is proposed that can use data from discrete sets of nodes and provide spatially continuous variation in the structural response parameters that are used to monitor structural degradation. Combined with an embedded sensor network to provide nodal response signals, this algorithm has potential for Structural Health Monitoring (SHM). The advantageous features of this algorithm are its reliance on local data, its ability to yield spatially continuous information, and its limited communication and computation requirements.
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Yi Huang, Yi Huang, Sia Nemat-Nasser, Sia Nemat-Nasser, } "Damage detection with spatially distributed 2D continuous wavelet transform", Proc. SPIE 6174, Smart Structures and Materials 2006: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, 61742M (11 April 2006); doi: 10.1117/12.659371; https://doi.org/10.1117/12.659371

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