交变电磁场检测激励探头的仿真与结构优化
Simulation and Structural Optimization of ACFM Excitation Probe
摘 要
应用COMSOL Multiphysics软件建立了交变电磁场检测缺陷的有限元模型，基于仿真模型分析了不同几何尺寸的磁芯对被检工件表面感应电流的均匀分布和工件缺陷检测效果的影响。研究了磁芯腿部高度、截面宽度和上部长度3个参数变化对工件感应电流均匀性分布和感应磁场信号分布的影响特征，得到了不同几何参数下的激励线圈对缺陷检测灵敏度的影响结果。在不同几何参数的U型探头激励下，得出了工件缺陷电磁场信号的特征分布情况以及检测缺陷时的最优磁芯几何参数，为U型交变电磁场激励探头的优化设计提供了依据。
激励探头
仿真分析
磁芯
alternating electromagnetic field
exciting probe
simulation analysis
magnetic core
Abstract
This paper establish the simulation model of alternating electromagnetic field defect detection with COMSOL Multiphysics software. Based on the simulation model, the influence of different size magnetic core on the uniform distribution of induced current and on the defect detection has been simulated. The effect of three parameters related with the magnetic core, the height, the width and the length, on the distribution of the induced current and on the signal distribution of the inductive magnetic field was studied. The effect of excitation coil with different parameters on the defect detection sensitivity was obtained. The characteristic distribution of electromagnetic field signal of the defects under U-shaped excitation probe with different geometric parameters is also obtained. The result of the optimum geometric parameters of the magnetic core is acquired. It provides the evidence to the optimal design of U-shaped excitation probe of ACFM system.
中图分类号 TG115.28 DOI 10.11973/wsjc201903006
所属栏目 试验研究
基金项目 国家自然科学基金资助项目（51504207）
收稿日期 2018/6/14
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网络出版日期
作者单位点击查看
备注周兆明(1983-),男,博士,主要从事油套管检测及评价技术
引用该论文: ZHOU Zhaoming,ZHANG Lulu,XU Mingze,LI Ruixin,FAN Peng. Simulation and Structural Optimization of ACFM Excitation Probe[J]. Nondestructive Testing, 2019, 41(3): 20～24
周兆明,张露露,许明泽,李瑞鑫,范鹏. 交变电磁场检测激励探头的仿真与结构优化[J]. 无损检测, 2019, 41(3): 20～24
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参考文献
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【2】GE J, LI W, CHEN G, et al. New parameters for the ACFM inspection of different materials[J]. Insight:Non-Destructive Testing and Condition Monitoring, 2016, 58(6):313-317.
【3】NICHOLSON G L, ROWSHANDEL H, HAO X J, et al. Measurement and modelling of ACFM response to multiple RCF cracks in rail and wheels[J]. Ironmaking & Steelmaking, 2013, 40(2):87-91.
【4】冷建成,赵瑞金,周国强,等.ACFM技术及其在钻修机械平台无损检测中的应用[J].无损检测,2013,35(5):47-51.
【5】李伟,张传荣,陈国明,等.U型ACFM探头精确建模和实验测试[J].电子测量与仪器学报,2013,27(7):658-662.
【6】李伟, 陈国明. U型ACFM激励探头的仿真分析[J]. 系统仿真学报, 2007, 19(14):3131-3134.
【7】宋凯,康宜华,孙燕华,等.基于U型探头的ACFM和AC-MFL法的机理辨析[J].测试技术学报,2010,24(1):67-72.
【8】LI W, CHEN G, ZHANG C, et al. Simulation analysis and experimental study of defect detection underwater by ACFM probe[J]. China Ocean Engineering, 2013, 27(2):277-282.
【9】倪春生, 陈国明, 张彦廷. 交流电磁场检测探头激励线圈的数值仿真及优化[J]. 中国石油大学学报(自然科学版), 2007, 31(2):100-104.
【10】曹鸿威. 基于交变电磁场技术的钢板表面缺陷检测方法研究[D].沈阳:沈阳工业大学,2015.
【11】ZHENG W, ZHANG L, SU Y, et al. Numerical simulation of a U-shaped ACFM inducer[J]. Materials Transactions, 2015, 56(5):743-748.
【12】张德俊. 基于涡流无损检测技术的导电涂层厚度检测方法研究[D].成都:电子科技大学,2015.
【13】PAPAELIAS M P, ROBERTS C, DAVIS C L, et al. Further developments in high-speed detection of rail rolling contact fatigue using ACFM techniques[J]. Insight:Non-Destructive Testing and Condition Monitoring, 2010, 52(7):358-360.
【14】ZHENG W, ZHANG L, SU Y, et al. Optimization design of alternating current field measurement inducer[J]. International Journal of Applied Electromagnetics and Mechanics, 2015, 49(1):133-143.
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