| 金属试件残余应力及损伤的磁记忆检测方法研究 |
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| 引用本文： | 张卫民,郭欣,袁俊杰,刘红光,孙海涛.金属试件残余应力及损伤的磁记忆检测方法研究[J].无损检测,2006,28(12):623-625. |
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| 作者姓名： | 张卫民 郭欣 袁俊杰 刘红光 孙海涛 |
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| 作者单位： | 北京理工大学,机械与车辆工程学院,制造系,北京,100081 |
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| 基金项目： | 国家自然科学基金;北京理工大学校科研和教改项目 |
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| 摘 要： | 利用磁记忆效应对铁磁性金属构件的残余应力和微损伤进行检测和评估，是较有潜力的无损检测新方法。在自行设计的拉伸加载装置上对45号钢制成的拉伸试件进行了试验研究。通过对试件表面磁场强度值、磁场强度梯度值和X射线衍射值的对比分析，说明了该方法的有效性，并从磁性物理学观点初步解释了该方法检测残余应力和微损伤的机理。
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| 关 键 词： | 磁记忆效应 无损检测 残余应力 微损伤 |
| 文章编号： | 1000-6656（2006）12-0623-03 |
| 收稿时间： | 2005-09-06 |
| 修稿时间： | 2005年9月6日 |
Detection of Residual Stress and Damage of Metal Specimen Using Metal Magnetic Memory Method |
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| ZHANG Wei-min,GUO Xin,YUAN Jun-jie,LIU Hong-guang,SUN Hai-tao.Detection of Residual Stress and Damage of Metal Specimen Using Metal Magnetic Memory Method[J].Nondestructive Testing,2006,28(12):623-625. |
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| Authors: | ZHANG Wei-min GUO Xin YUAN Jun-jie LIU Hong-guang SUN Hai-tao |
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| Affiliation: | School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | The method of metal magnetic memory is a new potential nondestructive testing method,which can be used to detect and estimate the residual stress and micro-damages of the ferromagnetic items.The samples of steel 45 are studied on the self-designed tension loading equipment.The effectiveness of the method is proved by the comparative analysis of the magnetic intensity,the gradient of the magnetic intensity and the value of X-rays diffraction on the samples' surface.The mechanism that the method detects the residual stress and micro-damages is preliminary explained on the point of the magnetic physics. |
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| Keywords: | Metal magnetic memory Nondestructive testing Residual stress Micro damage |
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