基于微磁学分析的缺陷微磁检测机理研究

中国机械工程 ›› 2013, Vol. 24 ›› Issue (09): 1173-1176.

基于微磁学分析的缺陷微磁检测机理研究

刘美全1;孙钦蕾1;姜忠宝2

1.军械工程学院，石家庄，050003
2.武汉军械士官学校，武汉，430075

出版日期:2013-05-10 发布日期:2013-05-16
基金资助:
河北省自然科学基金资助项目（E2008001258）；总装备部试验技术合作项目（2008SY5502010）
Hebei Provincial Natural Science Foundation of China（No. E2008001258）

Research on Micro-magnetic Detecting Mechanism of Defect Based on Micro-magnetics Analysis

Liu Meiquan1;Sun Qinlei1;Jiang Zhongbao2

1.Ordnance Engineering College,Shijiazhuang,050003
2.Wuhan Ordnance Noncommissioned Officers Academy,Wuhan,430075

Online:2013-05-10 Published:2013-05-16
Supported by:
Hebei Provincial Natural Science Foundation of China（No. E2008001258）

摘要/Abstract

摘要：

缺陷对铁磁材料内部磁畴壁的钉扎使得缺陷附近出现不依赖于外部磁场变化的微磁固定结点。针对该现象，从微磁学理论计算出发，通过能量最小原理分析了缺陷附近内部能量的变化，得出了缺陷附近微磁固定结点内磁化场的奇异分布，根据其分布特征实现了缺陷检测。

关键词: 磁畴, 微磁结点, 磁化矢量, 微磁检测

Abstract:

The micro-magnetic fixed knot which did not depend on the outer magnetic field formed near the defects, because the domain wall in the ferro-magnets was pinned by the defects. The singular distribution of magnetizing field in the micro-magnetic fixed knot near the defects was calculated by the method of minimum energy form micro-magnetics analysis. Defect detection can be realized according to the distribution characteristics and what proposed herein provides a theoretical basis for defect micro-magnetic defection.

Key words: magnetic domain, micro-magnetic knot, magnetization vector, micro-magnetic detecting

中图分类号:

TP274
TE973

刘美全1, 孙钦蕾1, 姜忠宝2. 基于微磁学分析的缺陷微磁检测机理研究[J]. 中国机械工程, 2013, 24(09): 1173-1176.

LIU Mei-Quan-1, SUN Qin-Lei-1, JIANG Zhong-Bao-2. Research on Micro-magnetic Detecting Mechanism of Defect Based on Micro-magnetics Analysis[J]. China Mechanical Engineering, 2013, 24(09): 1173-1176.

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