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- W1645365616 abstract "Guided wavefield analysis methods for detection and quantification of crack damage in an aluminum plate are presented in this paper. New wavenumber components created by abrupt wave changes at the structural discontinuity are identified in the frequency-wavenumber spectra. It is shown that the new wavenumbers can be used to detect and characterize the crack dimensions. Two imaging based approaches, filter reconstructed imaging and spatial wavenumber imaging, are used to demonstrate how the cracks can be evaluated with wavenumber analysis. The filter reconstructed imaging is shown to be a rapid method to map the plate and any existing damage, but with less precision in estimating crack dimensions; while the spatial wavenumber imaging provides an intensity image of spatial wavenumber values with enhanced resolution of crack dimensions. These techniques are applied to simulated wavefield data, and the simulation based studies show that spatial wavenumber imaging method is able to distinguish cracks of different severities. Laboratory experimental validation is performed for a single crack case to confirm the methods' capabilities for imaging cracks in plates." @default.
- W1645365616 created "2016-06-24" @default.
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- W1645365616 date "2015-09-01" @default.
- W1645365616 modified "2023-10-14" @default.
- W1645365616 title "Crack imaging and quantification in aluminum plates with guided wave wavenumber analysis methods" @default.
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- W1645365616 doi "https://doi.org/10.1016/j.ultras.2015.05.019" @default.
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