Fast simulation method for eddy current testing

In eddy current testing (ECT) analysis, it is necessary to develop a high performance computing method for the simulation of the testing signal. The testing signal is obtained from the changes of the eddy current around a crack. In this paper, a fast computation technique for the finite element model with a small crack is proposed. In the proposed method, the region where the current changes is selected by a basis function, and only the changes of the eddy current are solved. Furthermore, a formulation of integral form to calculate the impedance of the ECT model including magnetic material is shown