Optimization Design of Remote-field Eddy Current Sensor Based on Finite Element Simulation

Abstract

This paper designs a remote-field eddy current (RFEC) sensor for pipeline non-destructive testing. The sensor is composed of a transmitter coil, a receiver coil, and a shielding layer. The RFEC sensor is theoretically analyzed, and the sensor simulation model is established using COMSOL software. The finite element method is used to shorten the length of the sensor, and the structural parameters are optimized. A defect is added to the optimized model, and the finite element simulation shows that the RFEC sensor can identify the location of the defect and reflect the characteristics of the defect. Finally, a drag experiment of the RFEC sensor is carried out. The experimental results can correspond to the design goal, which verifies the effectiveness of the RFEC sensor design.