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远场涡流能量流的似波特性研究 被引量:1

THE WAVE-LIKE PHENOMENA RESEARCH FOR ENERGY FLOW IN REMOTE FIELD EDDY CURRENTS
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摘要 应用电磁场理论和有限元分析方法,系统地分析了远场涡流中能量流的变化规律,并重点讨论了似稳态激励和瞬态激励两种情况下的扩散能量流的似波特性.研究结果表明,能流分界线可以形象地表示能量在一个周期内的变化规律;能量变化与源的变化之间有一个时间滞后,呈现了似波特性. The remote field eddy current (RFEC) technique is a new powerful tool for pipe inspection. ln this paper the diffusive energy flow of RFEC has been systematically analyzed with finite element method upon electromagnetic theory. Results show that it has wave-like phenomena for diffusive energy flow of RFEC in both quasistatic and translent excltion.
出处 《应用科学学报》 CAS CSCD 1997年第3期370-374,共5页 Journal of Applied Sciences
基金 国家自然科学基金
关键词 远场涡流 似波现象 能量流 管道检测 无损检测 remote field eddy current, diffusive energy flow, finite element method,wave-like phenomena
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参考文献1

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同被引文献12

  • 1刘洪清,黄松岭,陆文娟.大口径管道远场涡流缺陷检测仿真建模[J].无损检测,2008,30(4):241-243. 被引量:5
  • 2宋小春,黄松岭,赵伟.天然气长输管道裂纹的无损检测方法[J].天然气工业,2006,26(7):103-106. 被引量:43
  • 3康宜华,周奇,丁劲锋.钻杆外螺纹检测中磁化器的有限元分析与设计[J].华中科技大学学报(自然科学版),2007,35(1):93-95. 被引量:3
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