铁磁构件拉压试验中的磁记忆效应研究
Study of the Correlation Between Stress Concentration and Metal Magnetic Memory Effect
摘 要
通过对带孔的45钢试样的拉伸、压缩试验，对试样磁记忆信号与应力集中之间的关系进行了研究。由拉伸和压缩实验得到应力集中和表面磁场畸变的对应关系，发现拉伸和压缩时应力集中导致的磁记忆信号的区别。利用力磁耦合试验对实验结果进行了分析，不仅能够很好地解释实验现象，并能对其他材料和应力集中状态的磁记忆现象进行一定的预测。
无损检测
应力集中
塑性变形
Metal magnetic memory effect
Nondestructive testing
Stress concentration
Plastic deformation
Abstract
The correlation between stress concentration and metal magnetic memory was studied by tension and compression experiments. The differential of the metal magnetic signal was found between tension and compression samples. In addition, the influence of plastic deformation was discussed. According to classic magnetomechanical experiment, a perfect explanation was given to the result.
中图分类号 TG115.28
所属栏目 科研成果与学术交流
基金项目 国家自然科学基金资助项目(50371045)；铁道部-清华大学科技研究基金资助项目(t200407,t200504)
收稿日期 2006/1/9
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备注陈 钘(1982-)，男，博士研究生，研究方向为电磁无损检测。
引用该论文: CHEN Xing,WANG Xiao-feng,YANG En,LI Lu-Ming. Study of the Correlation Between Stress Concentration and Metal Magnetic Memory Effect[J]. Nondestructive Testing, 2007, 29(5): 247～250
陈 钘,王晓凤,杨 恩,李路明. 铁磁构件拉压试验中的磁记忆效应研究[J]. 无损检测, 2007, 29(5): 247～250
被引情况:
【1】徐明秀,徐敏强, "旋转弯曲疲劳件的法向磁信号分布",无损检测 31, 606-609(2009)
【2】任尚坤,杨雅玲,林天华,任吉林, "环境磁场对20钢应力-磁效应的影响",理化检验－物理分册 44, 401-404(2008)
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参考文献
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【3】沈功田，吴 彦，王 勇.液化石油气储罐焊疤表面裂纹的磁记忆信号研究[J].无损检测,2004,26(07):349.
【4】焦 阳，李光海，沈功田.压力容器无损检测——汽车与铁路罐车的无损检测技术[J].无损检测,2005,27(10):542-546.
【5】李路明，胡 斌，黄松岭.掌上型金属磁记忆检测仪[J].无损检测,2004,26(05):249-252.
【6】李路明，王晓凤，黄松岭.磁记忆现象和地磁场的关系[J].无损检测,2003,25(08):388-389.
【7】Li L-M, Huang S-L, Wang X-F. Magnetic field abnormality caused by welding residual stress[J]. Journal of Magnetism and Magnetic Materials,2003,261385-391.
【8】Li L-M, Huang S-L, Wang L-F. Research on magnetic testing method of stress distribution[J]. Transactions of Nonferrous Metals Society of China (English Edition),2002,12(3):388-391.
【9】Craik D J, Wood M J. Magnetization changes induced by stress in A constant applied field[J]. Journal of Physics D: Applied Physics,1971,41009-1016.
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