| 不同应力状态下金属磁记忆检测信号特征 |
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| 引用本文： | 张静,周克印.不同应力状态下金属磁记忆检测信号特征[J].合肥工业大学学报(自然科学版),2007,30(3):381-383. |
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| 作者姓名： | 张静 周克印 |
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| 作者单位： | 1. 南京农业大学,工学院,江苏,南京,210032
2. 南京航空航天大学,无损检测中心,江苏,南京,210016 |
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| 摘 要： | 文章介绍利用金属磁记忆无损检测技术研究了构件在单向拉伸应力状态和纯剪切应力状态下的磁记忆检测信号特征,并对此进行了对比和分析。通过试验发现,磁记忆检测信号与构件的损伤状态之间具有明显的相关性,通过检测法向磁场的过零点可以实现对构件早期损伤的检测。
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| 关 键 词： | 磁记忆 铁磁性构件 无损检测 |
| 文章编号： | 1003-5060(2007)03-0381-03 |
| 修稿时间： | 2006年3月3日 |
Analysis of the characteristics of the metal magnetic memory signal under different stress states |
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| ZHANG Jing,ZHOU Ke-yin.Analysis of the characteristics of the metal magnetic memory signal under different stress states[J].Journal of Hefei University of Technology(Natural Science),2007,30(3):381-383. |
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| Authors: | ZHANG Jing ZHOU Ke-yin |
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| Abstract: | The metal magnetic memory(MMM) testing technique is applied to study the characteristics of the MMM signal produced under the uniaxial tensile stress state and those under the pure shear stress state.Comparison and analysis of the test results are carried out.It is found that the MMM sig-nal has apparent relationship with the damage,and that by the zero value of the MMM signal,the hidden damage in the ferromagnetic component can be detected. |
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| Keywords: | magnetic memory ferromagnetic structure nondestructive testing |
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