It is important to develop an efficient approximation model for the natural crack and the narrow gap in finite element analysis of ECT problems. In this paper, a finite element model for approximation of the crack in the ECT problems is proposed. In the proposed model, the anisotropic conductivity is introduced for the finite element method based on the hexahedral edge element. Numerical results and experimental results of the ECT problems are shown, and the validity of the proposed model is verified by comparing both the numerical results and the experimental results.
展开▼
