Abstract

Most of the structural members act under periodic loading conditions which lead to cracks or damages. The initiation of cracks may change the physical properties of a structure mostly the flexibility and stiffness changes. The dynamic changes will directly change the natural frequencies and mode shapes. This study was an adaptive evolutionary algorithm to identify the damage location based on the immune system of the vertebrates. The first three natural frequencies from FEA and experimental techniques act as an input to the negative selection algorithm. The proposed method results are compared with the results of experimental analysis and FEA. The percentage error in both cases was found to be 3 % which is measurable.

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