Fundamental study on embedded crack identification by genetic algorithm and FE analysis

摘要

Simple and sufficiently accurate fatigue crack detection technique is necessary to evaluate the fatigue performance of existing structures. Recently, measurement of two-dimensional displacement or stain distribution on the surface of plates becomes possible and this technique is considered to be applicable to estimate the initiation and propagation of embedded crack. In this study, possibility to estimate the position and size of embedded crack based on the measured surface displacement distribution by combining finite element analysis and optimization technique (Genetic Algorithm) is examined.