Numerical simulation of eddy current testing for plate with defects

The electromagnetic field of plate specimen containing defects was simulated by use of the finite element technology. The distribution of magnetic field and the size of the induced electromotive force were obtained. The influence of coil parameters and material properties of electromagnetic field was analyzed, and the relationship among the different excitation frequency, the defect depth and the detection sensitivity was discussed. The conclusions from this study provide theoretical reference for the eddy current testing probe of plate conductor and practical application.