| 涡流穿过式传感器实际渗透深度的数学模型 |
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| 引用本文： | 游凤荷,郭文婷. 涡流穿过式传感器实际渗透深度的数学模型[J]. 无损检测, 2003, 25(5): 225-228 |
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| 作者姓名： | 游凤荷 郭文婷 |
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| 作者单位： | 1. 武汉理工大学,测控系,武汉,430070
2. 华中科技大学,信息学院,武汉,430074 |
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| 摘 要： | 采用直接测量固态导体内部磁场分布的方法，研究影响穿过式传感器实际渗透深度的各种因素。结果表明，实际渗透深度除与导体的电导率、磁导率及测试频率有关外，还与线圈的结构及激励磁场有关。最后利用遗传算法建立了涡流实际渗透深度的数学模型，为确定涡流在导体中的实际渗透深度提供了可靠依据。
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| 关 键 词： | 涡流检验 渗透深度 数学模型 涡流穿过式传感器 |
| 文章编号： | 1000-6656(2003)05-0225-04 |
| 修稿时间： | 2003-02-17 |
MATHEMATIC MODEL FOR THE TRUE PENETRATING DEPTH OF EDDY CURRENT FEED-THROUGH PROBE |
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| YOU Feng he. MATHEMATIC MODEL FOR THE TRUE PENETRATING DEPTH OF EDDY CURRENT FEED-THROUGH PROBE[J]. Nondestructive Testing, 2003, 25(5): 225-228 |
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| Authors: | YOU Feng he |
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| Abstract: | The factors affecting the true penetrating depth (TPD) of eddy current probe were studied by directly measuring the distribution of the magnetic field inside a solid conductor. Results indicated that TPD was relevant to the shape of coil and stimulating magnetic field in addition to the electrical conductivity and magnetic permeability of a conductor as well as the testing frequency. The model established by genetic algorithm was expected to provide a reliable criterion for the TPD of eddy current inside a solid conductor. |
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| Keywords: | Eddy current testing Depth of penetration Mathematic model Sensor |
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