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金属管件电涡流检测偏心效应的解析建模与仿真

, PP. 133-138

Keywords: 电涡流检测,金属管道,偏心效应,建模,仿真

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Abstract:

电涡流方法是金属管道质量检测的一种有效手段,该方法要求探头和管道同轴。然而在实际工程应用中有很多干扰因素都会引起探头位置波动(即偏心),进而影响检测结果的精度和准确性。该文通过引入二阶矢量磁位,应用分离变量法建立了互感式探头偏心效应的解析模型;以此为基础仿真研究了不同材料、不同频率条件下偏心效应对探头信号的影响规律,并对偏心效应引入的误差进行评估。结果分析表

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