Eddy current analysis using finite-boundary element method and its application to crack profiles identification

摘要

A computational method is considered for three dimensional shape recovery of a SUS304 sample plate with cracks. A numerical model of the inspection process is given with the hybrid use of finite element and boundary element methods. The impedance change due to a defect is calculated by building the difference of the impedance values with the flaw present and absent. In order to achieve the high reduction of the computational costs, the finite element domain decomposition method is applied to the forward analysis.