非铁磁性材料电导率涡流检测仪器研发  

Research and development of eddy current testing instrument for conductivity measurement of non-ferromagnetic materials

作　　者：曹丙花 淦方鑫 范孟豹[2] CAO Binghua;GAN Fangxin;FAN Mengbao(School of Information and Control Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China;School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China)

机构地区：[1]中国矿业大学信息与控制工程学院,江苏徐州221116 [2]中国矿业大学机电工程学院,江苏徐州221116

出　　处：《中国科技论文》2022年第6期686-690,共5页China Sciencepaper

基　　金：国家自然科学基金资助项目(61701500)。

摘　　要：针对涡流检测的便捷性和灵敏性,设计出一套便携式非铁磁性材料电导率检测装置。该检测装置以STM32为核心,对各部分芯片和电路进行了选型和设计,确定了整个装置的组成及工作频率范围。研究了电导率涡流测量方法,开展了理论建模与仿真研究,利用研发的检测装置测试了不同电导率的试件,实验结果与模型结果一致。该检测装置能实现非铁磁性材料电导率的测量,测量结果具有良好的稳定性和重复性,最大误差不大于7%。A portable non-ferromagnetic material conductivity eddy current testing device was designed based on the convenience and sensitivity of eddy current testing.STM32 was taken as the core of the detection device.The appropriate chip and circuit were selected.The entire instrument composition and operating frequency range were determined.The electrical conductivity eddy current measurement method,theoretical modeling and simulation were studied.The performance of the instrument was tested by different conductivity specimens with detection device,and it was found that the experimental data were consistent with the simulation.The results show that it can realize the conductivity measurement of non-ferromagnetic materials,the measurement results have good stability and repeatability,and the maximum error is less than 7%.

关 键 词：涡流检测 仪器开发 金属材料 电导率 理论建模 

分 类 号：TN710.1[电子电信—电路与系统]