| 基于涡流阵列的裂纹检测仿真分析 |
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| 引用本文： | 杜金强,何宇廷,丁华.基于涡流阵列的裂纹检测仿真分析[J].无损检测,2011(7):21-24. |
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| 作者姓名： | 杜金强 何宇廷 丁华 |
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| 作者单位： | 空军工程大学工程学院; |
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| 基金项目： | 国家高技术研究发展计划资助项目(2009AA04Z406) |
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| 摘 要： | 分析了涡流阵列检测技术的基本原理。利用有限元方法建立了一种涡流阵列传感器的仿真模型，研究了裂纹检测时的输出信号特征，并考察了工作频率对输出特性的影响。研究表明，裂纹的出现会导致感应线圈输出信号的幅值和相位发生变化，随着激励信号频率的增加，涡流阵列传感器输出信号的差异变大，在3MHz左右时达到最大，然后减小。试验为该传感器的进一步研究及应用提供了参考。
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| 关 键 词： | 涡流阵列 传感器 裂纹检测 有限元 |
Simulation Analysis on Cracks Detection Based on Eddy Current Sensor Array |
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| DU Jin-Qiang,HE Yu-Ting,DING Hua.Simulation Analysis on Cracks Detection Based on Eddy Current Sensor Array[J].Nondestructive Testing,2011(7):21-24. |
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| Authors: | DU Jin-Qiang HE Yu-Ting DING Hua |
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| Affiliation: | DU Jin-Qiang,HE Yu-Ting,DING Hua (Engineering College,Air Force Engineering University,Xi'an 710038,China) |
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| Abstract: | The basic principles of eddy current array inspecting method were analyzed at first.Then a simulation model of an eddy current array probe was established based on finite element method.The output characteristics of the probe while inspecting cracks were obtained by the model.In addition,the influences of exciting frequency on output characteristics were also considered.It showed that there would be a change on amplitude and phase when a crack appeared below the footprint of sensing coil in metal structures... |
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| Keywords: | Eddy current array Sensor Crack detection Finite element |
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