铸钢-铝合金铆接构件的远场涡流检测工艺研究
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摘要
对铆接结构的板间间隙进行了远场涡流检测试验研究,建立了铆接结构间隙的远场涡流检测有限元仿真模型,研究了激励电流和激励频率对虚部的影响,在此基础上优化了远场涡流传感器的激励参数。对比分析了实部、虚部特征量对间隙进行定量表征的效果。结果表明,优化后的最佳激励频率为100 Hz,检测信号幅值虚部为定量评估间隙的最优特征量。试验测试结果与仿真结论相吻合,规律一致。
The field eddy current test was carried out on the inter-plate gap of riveted structure, a finite element simulation model for the remote field eddy current testing was established, the influence of excitation current and excitation frequency on the imaginary part were studied, and the excitation parameters of the far-field eddy current sensor were optimized. The effect of quantitative characterization of gap between real-part and imaginary part was compared. The results show that the optimal excitation frequency is 100 Hz, and the optimal characteristic quantity of the gap is measured by the imaginary part of the detection signal. The test results are consistent with the simulation results.
The field eddy current test was carried out on the inter-plate gap of riveted structure, a finite element simulation model for the remote field eddy current testing was established, the influence of excitation current and excitation frequency on the imaginary part were studied, and the excitation parameters of the far-field eddy current sensor were optimized. The effect of quantitative characterization of gap between real-part and imaginary part was compared. The results show that the optimal excitation frequency is 100 Hz, and the optimal characteristic quantity of the gap is measured by the imaginary part of the detection signal. The test results are consistent with the simulation results.
引文
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[2]金信鸿,张小海.渗透检测[M].北京:机械工业出版社,2014.
[3]强天鹏.射线检测[M].北京:中国劳动社会保障出版社,2010.
[4]郑晖,林树青.超声检测[M].北京:中国劳动社会保障出版社,2008.
[5]Maclean W R.Apparatus for magnetically measuring thickness of ferrous pipe[P].US patent,US2573799,1951-11-06.
[6]MLln Heyun,Sun Yushi.Application of“zoom in”Technique in3D remote field eddy current effect computation[J],IEEE Transactions on Magnetic,1990,26(2):881-884.
[7]Yushi Sun,Dennis Roach,Harry Zhu.New Advances in Detecting Cracks in Raised-Head Fasteners Holes Using Rotational Remote Field Eddy Current Technique[C],Presented at 2005 ASNT Fall Conference held in Columbus,OH,Oct.17-21,2005.
[8]Sun Y S.Finite element study of diffusion energy flow in diffusion energy flow in low frequency eddy current fields[J].Materials Evaluation,1989,1:87-92.
[9]Yushi Sun,Tianhe Ouyang.Apparatus and method for holding a rotatable eddy-current magnetic probe,and for rotating the probe around a boundary[p].US patent,US762638B1,Dec.1,2009.
[10]Yushi Sun,Tiianhe Ouyang,Jie Long,et al.Detecting Cracks Under Bushings With Rotational Remote-Field Eddy Current Probes[C],Presented at The 7th FAA/Do D/NA Sa Joint Conference on Aging Aircraft,New Orleans,LA,Sept.7-11,2003.
[11]林鹤云,曲民兴,孙雨施.远场涡流检测探头中探头速度效应的数值分析[J].无损检测,1991,16(1):3-6.
[12]孙雨施,曲民兴,司家屯.远场涡流无损检测高效实用探头[P].ZL90105697.9,1992.
[13]夏布礼.铁磁性管道远场涡流检测计算与分析[D].太原:中北大学,2010.
[14]张超.非磁性航空金属构件检测中脉冲远场涡流传感器的仿真设计[J].空军工程大学学报,2013,14(3):74-77.
[15]徐进,田华,彭正辉,等.远场涡流技术在PCCP断丝检测中的应用[J].混泥土与水泥制品,2014(12):32-34.