Delamination identification and response prediction in composites using bivariate Gamma function-based microgenetic algorithms |
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Authors: | Sang-Youl Lee |
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Affiliation: | Department of Civil Engineering, Andong National University, Andong-Si, Gyeongsangbuk-Do, Korealsy@anu.ac.kr lsy@andong.ac.kr |
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Abstract: | This study deals with an identification of stiffness reduction and response predictions occurred by the delamination damage in laminated composite plates under impact loads. Combined bivariate Gamma function and microgenetic algorithms are developed to determine the crack region due to the delamination and predict future responses. The validity of the proposed method was verified using impact-induced data obtained from a two-dimensional delamination finite element model. Examples indicated that the proposed approach is a feasible and advantageous method through which future dynamic responses can be predicted and the distribution of the degraded stiffness of laminated composite structures can be inspected for different measuring locations and fibre angles. |
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Keywords: | Delamination crack detection 2D-composite damage model bivariate Gamma function microgenetic algorithm response prediction |
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