| 涡流无损检测中类Sommerfeld积分的计算 |
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| 引用本文： | 幸玲玲,席保锋,盛剑霓.涡流无损检测中类Sommerfeld积分的计算[J].西安交通大学学报,1999,33(10):23-26,31. |
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| 作者姓名： | 幸玲玲 席保锋 盛剑霓 |
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| 作者单位： | 西安交通大学,710049,西安 |
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| 摘 要： | 对涡流无损检测中的类Ｓｏｍｍｅｒｆｅｌｄ积分给出了一种简单有效的数值积分方法。为了加速积分的收敛，导出了一个渐近项，将被积函数减去这个渐近项，从而得到了快速收敛的积分，加速了无穷积分的截断，显著提高了类Ｓｏｍｍｅｒｆｅｌｄ积分的计算效率，将几组典型数据的计算结果与ＦＥＭ－ＢＥＭ组合法计算结果的比较表明，该方法是准确和快速的，这一积分的高效率使其可以应用于涡流无损检测中缺陷的重构。
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| 关 键 词： | Sommerfeld积分 电磁场 涡流 无损检测 数值积分 |
Evaluation of Sommerfeld-Like Integrals in Eddy Current Non-Destructive Detection |
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| Xing Lingling,Xi Baofeng,Sheng Jianni.Evaluation of Sommerfeld-Like Integrals in Eddy Current Non-Destructive Detection[J].Journal of Xi'an Jiaotong University,1999,33(10):23-26,31. |
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| Authors: | Xing Lingling Xi Baofeng Sheng Jianni |
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| Abstract: | Presented is a method for integrating Sommerfeld like integrands in eddy current non destructive detection along the real axis. Subtraction of asymptotic terms is proposed to speed up the truncation process of an infinite integration interval. Several different cases are calculated. The present method is more accurate than the finite element and boundary element method. In addition, it can be used to reconstruct flaws in eddy current non destructive detection. |
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| Keywords: | Sommerfeld like integrals numerical methods in electromagnetic fields eddy current non destrctive detection |
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