铁磁性导体材料平板远场涡流探伤技术分析

摘要/Abstract

摘要：

介绍了平板远场涡流检测系统的基本结构和基本检测原理.根据检测时系统中磁力线和能量的分布特点，提出了能量凹陷区的概念.利用电磁数值仿真技术，给出了远场涡流检测中导体板无缺陷和有缺陷时，感应线圈处对检测信号起主要作用的方向的磁通密度分布变化特点.对比分析了板中不同深度和不同半径平底孔缺陷对感应线圈处磁通密度分布的不同影响.分析结果表明，因缺陷引起的空间磁通密度分布曲面形状与缺陷形状间有较直观的对应关系.最后，给出了实际平板远场涡流检测实验中，铁板上下表面存在不同尺寸平底孔缺陷时的远场检测信号曲线，显示出缺陷的半径、深度及位置对检测信号的不同影响.

关键词: 铁磁性导体, 平板远场涡流, , 磁场分布, , 探伤

Abstract:

The fundamental structure and the basic detection principle of the plate remote-field eddy current testing system were introduced. According to the distribution characteristics of the magnetic flux and the energy of the testing system, a novel concept related to the hollow area in the energy was proposed. Simulation techniques were used to obtain the distribution characteristics of the magnetic flux density in the direction which mainly influenced the output signal, in the plane where the detection coil was placed, and in the presence or otherwise of a fault in the conductor plate. In particular, the influence of flatbottom hole flaws of varying depths and radii on the magnetic flux density was analyzed. The analysis showed that the change in the magnetic flux density distribution was directly related to the shape of the fault. The test results for low-frequency remote-field signals for the plate were given with hole flaws appearing on the top or bottom of the plate. The test curves showed the different influences of the depth, radius, and location of the flaw on the detection signal for the tested material.

Key words:

ferromagnetic conductor, plate remote-field eddy-current; , magnetic field distribution, fault detection

中图分类号:

TM 154

陈佩华，黄平捷，张武波，唐华溢，周泽魁. 铁磁性导体材料平板远场涡流探伤技术分析[J]. 上海交通大学学报（自然版）, 2013, 47(12): 1948-1956.

CHEN Peihua，HUANG Pingjie，ZHANG Wubo，TANG Huayi,ZHOU Zekui. Fault Detection by Remote-Field Eddy Current Technique in Ferromagnetic Conductive Plate[J]. Journal of Shanghai Jiaotong University, 2013, 47(12): 1948-1956.

参考文献

［1］Schmidt T R. History of the remotefield eddycurrent inspection technique［J］. Materials Evaluation，1989，47(1):1422.

［2］徐小杰.铁磁性管道中轴向裂纹的远场涡流检测技术研究［D］.湖南:国防科学技术大学, 机电工程与自动化学院，2007.

［3］Sun Y S,Udpa L,Udpa S. A novel remote field eddy current technique for inspection of thickwalled aluminum plates［J］. Materials Evaluation,1998,56(1):9497.

［4］曲民兴,周连文.导电平板的远场涡流现象［J］.无损检测,1997,19(8):216219.

QU Minxing,ZHOU Lianwen. The remote field eddy current phenomenon on plate conductor［J］.

Nondestructive Testing, 1997,19(8):216219.

［5］周连文,曲民兴.导电平板中的远场涡流特性［J］.南京航空航天大学学报, 1998,30(2):146152.

ZHOU Lianwen, QU Minxing. The characteristic of remote field eddy current on plate conductor［J］. Journal of Nanjing University of Aeronautics and Astronautics, 1998,30(2):146152.

［6］Roubicek Tomas,Tomassetti Giuseppe. Ferromagnets with eddy currents and pinning effects: Their thermodynamics and analysis［J］. Mathematical Models & Methods in Applied Sciences, 2011,21(1):2955.

［7］Thirunavukkarasu S, Rao B P C, Jayakumar T. Techniques for processing remote field eddy current signals from bend regions of steam generator tubes of prototype fast breeder reactor［J］. Annals of Nuclear Energy, 2011,38(4): 817 824.

［8］Miorelli R, Reboud C, Lesselier D. Eddy current modeling of narrow cracks in planarlayered metal structures［J］. IEEE Transactions on Magnetic，2012,48(10):25522559.

[1]	王聚团, 戚晓宁, 黄志明. 水下生产管汇测试技术及其改进研究[J]. 海洋工程装备与技术, 2022, 9(2): 43-49.
[2]	袁振钦, 邹科, 孙亚峰, 刘刚, 屈衍, 李居跃. 基于时域分析法的动态电缆疲劳分析[J]. 海洋工程装备与技术, 2022, 9(2): 50-55.
[3]	王娟, 杨明旺, 郑茂尧, 刘凌云, 赵立君. 高强钢在大型半潜式平台组块建造中的应用[J]. 海洋工程装备与技术, 2022, 9(1): 27-31.
[4]	陈欣, 赵晓磊, 王立坤, 肖德明, 张腾月. 深水大型吸力锚建造技术研究[J]. 海洋工程装备与技术, 2022, 9(1): 32-36.
[5]	尹彦坤, 易涤非. 半潜式生产平台船体结构关键节点工程临界评估[J]. 海洋工程装备与技术, 2022, 9(1): 52-57.
[6]	ZHANG Shengfa (张胜发), TANG Na (唐纳), SHEN Guofeng (沈国峰), WANG Han (王悍), QIAO Shan (乔杉). Universal Software Architecture of Magnetic Resonance-Guided Focused Ultrasound Surgery System and Experimental Study[J]. J Shanghai Jiaotong Univ Sci, 2021, 26(4): 471-481.
[7]	MA Qunsheng (马群圣), CEN Xingxing (岑星星), YUAN Junyi (袁骏毅), HOU Xumin (侯旭敏). Word Embedding Bootstrapped Deep Active Learning Method to Information Extraction on Chinese Electronic Medical Record[J]. J Shanghai Jiaotong Univ Sci, 2021, 26(4): 494-502.
[8]	安庆升, 孙立东, 武秋生. 碳纤维增强复合材料发射筒设计研究[J]. 空天防御, 2021, 4(2): 13-.
[9]	KONG Xiangqiang (孔祥强), MENG Xiangxi (孟祥熙), LI Jianbo (李见波), SHANG Yanping (尚燕平), CUI Fulin (崔福林) . Comparative Study on Two-Stage Absorption Refrigeration Systems with Different Working Pairs[J]. J Shanghai Jiaotong Univ Sci, 2021, 26(2): 155-162.
[10]	ZHUANG Weimin (庄蔚敏), WANG Pengyue (王鹏跃), AO Wenhong (熬文宏), CHEN Gang (陈刚) . Experiment and Simulation of Impact Response of Woven CFRP Laminates with Different Stacking Angles[J]. J Shanghai Jiaotong Univ Sci, 2021, 26(2): 218-230.
[11]	ZHOU Xuhui (周旭辉), ZHANG Wenguang (张文光), XIE Jie (谢颉). Effects of Micro-Milling and Laser Engraving on Processing Quality and Implantation Mechanics of PEG-Dexamethasone Coated Neural Probe[J]. J Shanghai Jiaotong Univ Sci, 2021, 26(1): 1-9.
[12]	HUANG Ningning (黄宁宁), MA Yixin (马艺馨), ZHANG Mingzhu (张明珠), GE Hao (葛浩), WU Huawei (吴华伟). Finite Element Modeling of Human Thorax Based on MRI Images for EIT Image Reconstruction[J]. J Shanghai Jiaotong Univ Sci, 2021, 26(1): 33-39.
[13]	WANG Xianjin, GAO Xu, YU Kuigang . Fixture Locating Modelling and Optimization Research of Aluminum Alloy Sidewall in a High-Speed Train Body[J]. J Shanghai Jiaotong Univ Sci, 2020, 25(6): 706-713.
[14]	QIAO Xing, MA Dan, YAO Xuliang, FENG Baolin. Stability and Numerical Analysis of a Standby System[J]. J Shanghai Jiaotong Univ Sci, 2020, 25(6): 769-778.
[15]	WU Jin, MIN Yu, YANG Xiaodie, MA Simin . Micro-Expression Recognition Algorithm Based on Information Entropy Feature[J]. Journal of Shanghai Jiao Tong University(Science), 2020, 25(5): 589-599.