Damage detection the plate of ship structure using finite element model updating based wavelet transform coefficients of a correlation function

In this paper, an innovative method for damage detection for the plate model, along with longitudinal and transverse stiffeners in the side hull of the ship based on the finite element model updating based on the wavelet transform of correlation function is presented. The proposed algorithm is used to estimate the parameters of plate model, along with longitudinal and transverse stiffeners in the side hull of the ship. By the solution of the sensitivity equation through Least-squares method, the finite element model of the structure is updated for estimation of the location and severity of structural damages, simultaneously. The results of the model updating using noise contaminated data indicate the high accuracy of and robustness of the method against modeling and measurement errors.