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。
所属栏目
2014远东无损检测新技术论坛论文精选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)。
收稿日期
2014/6/25
作者单位
高运来:南京航空航天大学,南京 210016
田贵云:南京航空航天大学,南京 210016电子科技大学,成都 611731
丁松:南京航空航天大学,南京 210016
季娟:南京航空航天大学,南京 210016
王平:南京航空航天大学,南京 210016
王海涛:南京航空航天大学,南京 210016
李东:南京航空航天大学,南京 210016
备注
高运来(1989-),男,博士研究生,主要从事电磁无损检测的研究。
引用该论文:
GAO Yun-lai,TIAN Gui-yun,DING Song,JI Juan,WANG Ping,WANG Hai-tao,LI Dong.FEM Simulation on Electromagnetic NDT of Rail RCF Crack Using Vertical Magnetization[J].Nondestructive Testing,2014,36(11):18～23
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[J].无损检测,2014,36(11):18～23
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