Simulation Analysis for Remote Filed Eddy Current Testing of Unidirectional Carbon Fiber Reinforced Plastic

In order to detect the defect of unidirectional Carbon Fiber Reinforced Plastic (CFRP), the simulation model of remote field eddy current testing (RFECT) was established by the finite element simulation software COMSOL, and the influence of excitation coil size, working frequency and the axial distance of coils on the detection results were comprehensively compared. Finally, the optimal parameters of the remote field eddy current testing model are determined. By analyzing the unidirectional CFRP magnetic flux density component under the influence of the remote field eddy current, it is found that the magnetic flux density z component can be used as the feature for defect detection, which provides a research idea for the effective identification of defects.