| 基于磁畴聚合模型的磁记忆效应机理研究 |
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| 引用本文： | 宋凯,任吉林,任尚坤,唐继红.基于磁畴聚合模型的磁记忆效应机理研究[J].无损检测,2007,29(6):312-314,361. |
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| 作者姓名： | 宋凯 任吉林 任尚坤 唐继红 |
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| 作者单位： | 南昌航空工业学院,无损检测技术教育部重点实验室,南昌,330063 |
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| 基金项目： | 江西省教育厅资助项目;无损检测技术重点实验室开放基金;江西省教育厅科研项目 |
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| 摘 要： | 研究了铁磁构件在受载时产生磁记忆效应的机理。结合试件的断裂机制和位错理论，分析了试件组织的微观变化。建立畴壁聚合模型，探讨了构件形成的有取向的宏观磁化。在应力集中区域或微观损伤区域建立带磁偶极子模型，计算试件表面的泄漏磁场。结果表明，畴壁聚合模型可以解释应力集中区域或微观损伤区域的磁场变化。
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| 关 键 词： | 磁记忆检测 磁畴聚合模型 基础理论分析 |
| 文章编号： | 1000-6656（2007）06-0312-03 |
| 收稿时间： | 2006-12-22 |
| 修稿时间： | 2006-12-22 |
Study on the Mechanism of Magnetic Memory Effect Based on Polymerization Model of Magnetic Domain |
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| SONG Kai,REN Ji-lin,REN Shang-kun,TANG Ji-hong.Study on the Mechanism of Magnetic Memory Effect Based on Polymerization Model of Magnetic Domain[J].Nondestructive Testing,2007,29(6):312-314,361. |
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| Authors: | SONG Kai REN Ji-lin REN Shang-kun TANG Ji-hong |
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| Affiliation: | Key Laboratory of Nondestructive Test (Ministry of Education |
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| Abstract: | The mechanism of magnetic memory effect on ferromagnetic material under loading was studied. By fracture mechanism and dislocation theory, the polymerization model of magnetic domain wall was presented on the basis of the analysis of microstructure changes. The oriented magnetization of specimen was viewed also, and then the magnetic flux leakage of specimen in the stress concentration area or microstructure damage area through magnetic dipole model was calculated. Results showed that, magnetic changes in the stress concentration area or microstructure damage area could be explained by polymerization model of magnetic domain wall. |
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| Keywords: | Magnetic memory testing Polymerization model of magnetic domain Basic theory analysis |
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