| 管道裂纹涡流检测线圈阻抗信号的快速仿真 |
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| 引用本文： | 陈德智,邵可然.管道裂纹涡流检测线圈阻抗信号的快速仿真[J].电工技术学报,2000,15(6):75-78. |
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| 作者姓名： | 陈德智 邵可然 |
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| 作者单位： | 华中理工大学电力工程系 430074 |
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| 摘 要： | 使用放置式线圈对管道进行涡流检测，不同走向的裂纹可以获得相同的检测灵敏度。在对这类问题进行数值模拟时，由于线圈在无缺陷管壁中产生的场不存在解析解，难度很大。当管道半径远大于线圈尺寸时，管壁可看作平板导体，问题得到简化。如果管道半径不是远大于线圈尺寸，可以通过对平板模型的修正获得比较准确的数值仿真结果。
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| 关 键 词： | 涡流检测 裂纹 积分方程法 管道检测 |
| 修稿时间： | 2000年6月26日 |
Rapid Simulation of the Coil Impedance Signal for Eddy Current Inspection of the Tube with a Crack |
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| Chen Dezhi , Shao Keran.Rapid Simulation of the Coil Impedance Signal for Eddy Current Inspection of the Tube with a Crack[J].Transactions of China Electrotechnical Society,2000,15(6):75-78. |
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| Authors: | Chen Dezhi Shao Keran |
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| Affiliation: | Huazhong University of Science & Technology 430074 China |
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| Abstract: | A pancake coil provides a detection sensitivity indep endent of the crack orientation when inspecting a tube. However the problem is d ifficult to simulate because there is no analytical solution for the incident fi eld. When the tube radius is far greater than the coil size the tube wall can be considered as a conducting plate that can be easily simulated. If the tube radi us is not so large a fairly exact prediction can also be obtained through an app ropriate modification of the plate model. |
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| Keywords: | Eddy current testing Crack Integral equation m ethod Tube detection |
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