Simulation Study of Parameter Sensitivity for High Frequency Eddy Current Measurement

The process of detecting metal materials can be affected by factors such as the size of the eddy current probe and the magnitude of the current. High frequency eddy current sensors have been widely used in the detection of material internal flaws because of their advantages, such as a non-contact structure and relative speed. However, the process of detecting metal materials can be affected by factors such as these. This study analyzes the influence of measurement parameters such as the inner and outer radius and height of the coil, the number of coils and layers of the high-frequency eddy current structure on the measurement results through a combination of finite element simulation and experimental verification. Additionally, this study quantifies and discusses various factors affecting the measurement accuracy, and it proposes an optimization method for the high frequency eddy current structure. The purpose of this study is to address the issue of measurement accuracy.