Damage detection in beam-like composite structures via Chebyshev pseudo spectral modal curvature

摘要: Abstract This paper presents the Chebyshev pseudo spectral modal curvature formulation for damage detection in beam-like composite structures. The proposed method is extension of authors' former work which based on Fourier method. overcomes severe shortcomings transform has serious problems associated with wrap-around effect while analyzing finite length signal. Moreover, inherits spatial filtering capability and accuracy spectrum-based curvature, ensures robustness calculation noisy conditions. validations presented comparisons spectrum are numerically experimentally demonstrated