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- W4309632007 abstract "This paper presents a damage identification method for beam-type structures based on the wavelet analysis. The damage location is predicted by a Damage Locating Index (DLI) based on a combined identification of local maxima from the scalograms of mode shapes. A new Damage Severity Index (DSI) based on the Lipschitz exponent is formulated such that it is not dependent from the damage locations, boundary conditions, and mode order, as long as a high enough number of measuring points is considered. This study focuses on its application using relatively few measurement points and on the consistency of the DSI. Results from a beam with double-notch damage are analyzed. The results show that the method is applicable with a sparse measurement grid and the DSI Reference values from a static analysis can be referred for damage evaluation using modal displacements. The practical limits of the method are also discussed. • The proposed method is applicable to mode shapes with sparse measurement points. • The proposed DLI is robust to the oscillation of wavelet function. • The proposed DSI is valid for modal and static analysis. • The DSI is independent from damage locations, boundary conditions, and mode orders. • Accurate prediction results are obtained for multi-damage scenarios." @default.
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- W4309632007 date "2022-12-01" @default.
- W4309632007 modified "2023-10-18" @default.
- W4309632007 title "Wavelet and Lipschitz exponent based damage identification method for beams using mode shapes" @default.
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- W4309632007 doi "https://doi.org/10.1016/j.measurement.2022.112201" @default.
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