反射/透射涡流非铁磁性材料检测仿真与实验  

Simulation and experiment on reflection/transmission eddy current for non-ferromagnetic material

作　　者：常祥 周德强 王华[1] 曹丕宇 CHANG Xiang;ZHOU Deqiang;WANG Hua;CAO Piyu(School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China;Key Laboratory of Nondestructive Testing, Nanchang 330063, China;Key Laboratory for Advanced Food Manufacturing Equipment Technology of Jiangsu Province, Wuxi 214122, China)

机构地区：[1]江南大学机械工程学院,江苏无锡214122 [2]无损检测技术教育部重点实验室,江西南昌330063 [3]江苏省食品先进制造装备技术重点实验室,江苏无锡214122

出　　处：《兵器材料科学与工程》2018年第3期56-60,共5页Ordnance Material Science and Engineering

基　　金：国家自然科学基金(51107053/E070104);无损检测技术教育部重点实验室开放基金(ZD201629001);2017年江苏省研究生实践创新项目(SJCX17_0487)

摘　　要：针对非铁磁性板材的反射式和透射式涡流探头,建立反射式和透射式涡流检测有限元仿真模型,分析不同激励频率两种形式的涡流探头可检测缺陷的深度与标准渗透深度的关系,并通过实验证实仿真分析的有效性。结果表明:反射式涡流可检测缺陷深度与标准渗透深度基本一致;透射式涡流在高频率激励下可检测缺陷的深度远大于标准渗透深度。这为合理选择线圈形式和优化传感器性能提供参考。For non-ferromagnetic metal reflection and transmission eddy current detection,a series of simulation models of reflection and transmission eddy current detection was established. The relationship between the depth of detectable defects and the standard penetration depth was analyzed by simulation models with the different excitation frequencies. The validity of the simulation analysis was proved by experiments. Simulation and experimental results show that reflective eddy current can detect the defect depth which is basically the same with the standard penetration depth. The transmission eddy current can detect the defect depth which is much deeper than the standard penetration depth at high frequency excitation.

关 键 词：涡流 反射 透射 非铁磁性材料 

分 类 号：TG115[金属学及工艺—物理冶金]