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This paper presents the Chebyshev pseudo spectral modal curvature formulation for damage detection in beam-like composite structures. The proposed method is the extension of authors' former work which is based on the Fourier spectral method. The Chebyshev pseudo spectral modal curvature overcomes the severe shortcomings of Fourier transform based spectral formulation which has serious problems associated...
In damage assessment of composite structures, the modal curvature appears to be one of the most important damage indices in the past decades. However, a noticeable deficiency of the modal curvature is its susceptibility to noise, which is mainly induced by the numerical difference estimation. This study proposes the scale-wavenumber domain filtering method based on the combination of the continuous...
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