| 采用保角变换法分析铁磁材料缺陷漏磁场 |
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| 引用本文： | 靳英卫,王长龙,王瑾,陈永利. 采用保角变换法分析铁磁材料缺陷漏磁场[J]. 军械工程学院学报, 2005, 17(1): 11-13 |
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| 作者姓名： | 靳英卫 王长龙 王瑾 陈永利 |
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| 作者单位： | 军械工程学院电气工程系 河北石家庄050003(靳英卫，王长龙，王瑾)，军械工程学院电气工程系 河北石家庄050003(陈永利) |
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| 基金项目： | 国家自然科学基金资助项目 (50175109) |
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| 摘 要： | 利用保角变换的方法求出了金属表面缺陷裂纹形状为半椭圆的情况下的漏磁场的模型。介绍了保角变换的过程, 边界等效磁荷的求解过程, 铁磁材料以外自由空间的漏磁场的求解过程, 并讨论了漏磁场与缺陷裂纹的大小的关系, 为缺陷定量提供了理论基础。
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| 关 键 词： | 表面裂纹 铁磁材料 漏磁场 |
| 文章编号： | 1008-2956(2005)01-0011-03 |
| 修稿时间： | 2004-10-25 |
Analysis of Magnetic Flux Leakage out of Ferromagnetic Material Defect by Conformal Transformation |
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| JIN Ying-wei,WANG Chang-long,WANG Jin,CHEN Yong-li. Analysis of Magnetic Flux Leakage out of Ferromagnetic Material Defect by Conformal Transformation[J]. Journal of Ordnance Engineering College, 2005, 17(1): 11-13 |
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| Authors: | JIN Ying-wei WANG Chang-long WANG Jin CHEN Yong-li |
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| Abstract: | In this paper,a model of magnetic flux leakage of ferromagnetic material surface with semi-elliptical-shaped defect is introduced. And the conformal transformation course is given, then the area density of magnetic charge on the surface of the defect is obtained, the magnetic flux leakage out of the ferromagnetic material can be calculated due to the magnetic charge area density. The amplitude of magnetic flux leakage varies with the crack width and depth. With the equation obtained, the relation between the magnetic flux leakage and the crack dimension is introduced. |
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| Keywords: | surface crack ferromagnetic material magnetic flux leakage |
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