表面缺陷开放漏磁场空间分布特性研究

doi:10.16265/j.cnki.issn1003-3033.2017.04.015

中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (4): 82-86.doi: 10.16265/j.cnki.issn1003-3033.2017.04.015

表面缺陷开放漏磁场空间分布特性研究

戴光¹ 教授, 安冉¹, 杨志军¹ 副教授, 刘延雷² 高级工程师, 于永亮³ 工程师

1 东北石油大学机械科学与工程学院,黑龙江大庆 163318
2 杭州市特种设备检测院,浙江杭州 310003
3 南京市锅炉压力容器检验研究院,江苏南京 210002

收稿日期:2017-01-16 修回日期:2017-03-18 发布日期:2020-11-22
作者简介:戴光 (1954—),男,吉林通化人,博士,教授,博士生导师,长期从事化工过程机械和无损检测教学和科研工作。E-mail:gdai@126.com。
安冉 (1994—),女,黑龙江大庆人,硕士研究生,主要研究方向为无损检测。E-mail:ananan0925@126.com。
基金资助:
国家青年自然科学基金资助(51607035)。

Research on distribution of open leakage magnetic field at ferromagnetic component surface defect

DAI Guang¹, AN Ran¹, YANG Zhijun¹, LIU Yanlei², YU Yongliang³

1 College of Mechanical Science & Engineering, Northeast Petroleum University, Daqing Heilongjiang 163318, China
2 Hangzhou Special Equipment Inspection Institute, Hangzhou Zhejiang 310003, China
3 Nanjing Boiler & Pressure Vessel Supervision and Inspection Institute, Nanjing Jiangsu 210002, China

Received:2017-01-16 Revised:2017-03-18 Published:2020-11-22

摘要/Abstract

摘要： 为了检测构件表面缺陷,根据永久磁铁在构件表面产生的开放磁场现象,采用有限元方法,建立表面缺陷开放磁场磁化模型,得到缺陷漏磁场空间分布特性。通过改变缺陷深度、宽度以及气隙高度,研究表面缺陷参数对开放磁场的影响,分析磁通量密度分量以及幅值等参数变化规律。在实验室条件下进行人工模拟表面缺陷的检测试验。结果表明,试件缺陷位置处磁通量密度较大,磁通量密度随缺陷深度、宽度的增加而增大,且气隙高度越大,磁通量密度越小。有限元研究分析结果与试验结果一致。

关键词: 开放磁场, 表面缺陷, 有限元分析, 漏磁, 试验研究

Abstract: In order to detect a surface defect in a metallic component, according to the phenomenon of the open magnetic field generated by a permanent magnet on the surface of the component, the finite element method was used to establish a magnetic field model for the surface defect, and the spatial distribution characteristics of the leakage magnetic field were obtained. By changing the depth, width and air gap height, the influences of surface defect parameters on the open magnetic field were studied, and the variation in the magnetic flux density components and that in the amplitudes were analyzed. Tests of artificial surface defects were carried out under laboratory conditions. The results show that the magnetic flux density is higher at the defect location, the magnetic flux density increases with the increasing of both the depth and the width of the defect, and the greater the height of the air gap is, the lower the magnetic flux densitywill be. The experimental results are consistent with the results of the finite element researches and analysis.

Key words: open magnetic field, surface defect, finite element analysis, magnetic flux leakage, experimental research

中图分类号:

X924.2

戴光, 安冉, 杨志军, 刘延雷, 于永亮. 表面缺陷开放漏磁场空间分布特性研究[J]. 中国安全科学学报, 2017, 27(4): 82-86.

DAI Guang, AN Ran, YANG Zhijun, LIU Yanlei, YU Yongliang. Research on distribution of open leakage magnetic field at ferromagnetic component surface defect[J]. China Safety Science Journal, 2017, 27(4): 82-86.

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表面缺陷开放漏磁场空间分布特性研究

Research on distribution of open leakage magnetic field at ferromagnetic component surface defect

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