钢轨疲劳斜裂纹垂向磁化检测仿真

高运来; 田贵云; 丁松; 季娟; 王平; 王海涛; 李东

钢轨疲劳斜裂纹垂向磁化检测仿真

高运来¹,
田贵云^1,2,
丁松¹,
季娟¹,
王平¹,
王海涛¹,
李东¹

1.
南京航空航天大学,南京 210016
2.
电子科技大学,成都 611731

基金项目:

江苏省研究生培养创新工程资助项目(KYLX_0253, CXLX 11_0184)

中央高校基本科研业务费专项资金资助项目(KYLX_0253, NZ 2012115)

EU FP7资助项目(FP7-PEOPLE-2010-IRSES)。

详细信息

作者简介:
高运来(1989-),男,博士研究生,主要从事电磁无损检测的研究。

中图分类号: TG115.28
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出版历程
- 收稿日期: 2014-06-24
- 刊出日期: 2014-11-09

FEM Simulation on Electromagnetic NDT of Rail RCF Crack Using Vertical Magnetization

摘要

摘要: 在分析典型滚动接触疲劳裂纹扩展特征,介绍垂向磁化检测原理及巡检方法的基础上,提出了一种采用垂向磁化场对钢轨疲劳斜裂纹进行电磁检测的方法。通过建立有限元模型,仿真分析了表面斜裂纹与钢轨顶面夹角、沿轨面下转向扩展角度、扩展深度及延伸长度、近表面裂纹埋藏深度与垂向磁化检测信号的关系。结果表明,该方法能有效检测材料表面和近表面斜裂纹及其沿轨面下的扩展特征,有助于高速铁路钢轨疲劳伤损的检测和故障早期预警。
- 滚动接触疲劳 /
- 垂向磁化检测 /
- 钢轨斜裂纹 /
- 有限元仿真
Abstract: This paper proposed an electromagnetic NDT method for inspection and characterization of railhead fatigue oblique crack using vertical magnetization. The characteristics of natural crack initiation and propagation induced by rolling contact fatigue (RCF) were analyzed and simplified for theoretical investigation of vertical magnetization test. The relationship between detection signals and crack dimensions, such as inclined angle with running surface, growth path with different turning angles, propagation depth and length of surface crack and buried depth of sub-surface crack, were provided by carrying out 2-D static FEM simulation. The results demonstrated that this approach could effectively recognize surface and sub-surface oblique crack and their propagation characteristics. This approach is suitable for rail RCF damage inspection and fault early warning of high speed railway.
- Rolling contact fatigue /
- Vertical magnetization test /
- Rail oblique crack /
- FEM simulation

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参考文献(18)

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钢轨疲劳斜裂纹垂向磁化检测仿真

作者简介: 高运来(1989-),男,博士研究生,主要从事电磁无损检测的研究。

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FEM Simulation on Electromagnetic NDT of Rail RCF Crack Using Vertical Magnetization

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作者简介:
高运来(1989-),男,博士研究生,主要从事电磁无损检测的研究。