Song Mengmeng, Li Mengwei, Xiao Shungen, Ren Jihua
College of Information, Mechanical and Electrical Engineering, Ningde Normal University, Ningde 352000, China.
College of Mechanical and Electrical Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
Sensors (Basel). 2023 Jul 22;23(14):6610. doi: 10.3390/s23146610.
To study the influence of the geometric structure of the probe coil on the electromagnetic characteristics of the eddy current probe in the process of eddy current testing, based on the principle of eddy current testing, different probe coil models were established using finite element software. These geometric structure parameters include the difference between the inner and outer radius, thickness, and equivalent radius. The magnetic field distribution around the probe is simulated and analyzed under different parameters, and the detection performance of the probe is judged in combination with the change rate of the magnetic field around the probe coil. The simulation results show that at a closer position, increasing the difference between the inner and outer radii, reducing the thickness, and reducing the equivalent radius are beneficial to improve the resolution of the probe coil. At a far position, reducing the difference between the inner and outer radii, increasing the thickness, and reducing the equivalent radius are beneficial to improve the resolution of the probe coil. At the same time, the accuracy of the simulation data is verified by comparing the theoretical values with the simulated values under different conditions. Therefore, the obtained conclusions can provide a reference and basis for the optimal design of the probe structure.
为研究在涡流检测过程中探头线圈的几何结构对涡流探头电磁特性的影响，基于涡流检测原理，利用有限元软件建立了不同的探头线圈模型。这些几何结构参数包括内外半径之差、厚度和等效半径。在不同参数下对探头周围的磁场分布进行模拟分析，并结合探头线圈周围磁场的变化率判断探头的检测性能。模拟结果表明，在较近位置，增大内外半径之差、减小厚度和减小等效半径有利于提高探头线圈的分辨率。在较远位置，减小内外半径之差、增大厚度和减小等效半径有利于提高探头线圈的分辨率。同时，通过比较不同条件下的理论值和模拟值，验证了模拟数据的准确性。因此，所得结论可为探头结构的优化设计提供参考和依据。
