| 铁磁构件拉压试验中的磁记忆效应研究 |
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| 引用本文： | 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 |
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| 作者姓名： | 陈钘 王晓凤 杨恩 李路明 |
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| 作者单位： | 1. 清华大学,机械工程系,北京,100084
2. 清华大学,航天航空学院,北京,100084 |
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| 基金项目： | 国家自然科学基金;铁道部-清华大学合作研究项目 |
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| 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。
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| 关 键 词： | 磁记忆效应 无损检测 应力集中 塑性变形 |
| 文章编号： | 1000-6656（2007）05-0247-04 |
| 收稿时间： | 2006-01-09 |
| 修稿时间： | 2006-01-09 |
Study of the Correlation Between Stress Concentration and Metal Magnetic Memory Effect |
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| 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 |
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| Authors: | CHEN Xing WANG Xiao-feng YANG En LI Lu-Ming |
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| Affiliation: | 1Department of Mechanical Engineering, Tsinghua University, Beijing 10084, China;School of Aerospace, Tsinghua University, Beijing 100084, China |
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| 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. |
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| Keywords: | Metal magnetic memory effect Nondestructive testing Stress concentration Plastic deformation |
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