Inverse analysis for ECT models formulated by Laplace transform BEM with singular value decomposition and fuzzy inference

摘要

This paper presents inverse analysis which is formulated by boundary element method (BEM) with Laplace transform and the matrices for inverse analysis are stabilized with singular value decomposition and fuzzy inference. The proposed method is applied to crack shape identification on an eddy current testing (ECT). In conventional method, some crack shapes can not be obtained because of an ill-posed problem, the new method can identify crack shapes by stabilizing the matrices. In this paper, it is shown that the proposed method is applicable to the crack shape estimation of ECT.