CAJ | 학술논문

基于铁磁性管道与涡流激励/接收线圈构成的耦合式传输结构，利用贝塞尔函数构建了铁磁性管道近场涡流的耦合传输模型，通过对该模型的耦合互感分析，分离出铁磁性管道物理参数对线圈互感的主要影响因素——去耦度参数。文中采用大宗量分析法对该模型进行计算，将其结果与ANSYS建模仿真、管道电学实验的输出进行了比较分析，结果显示出较好的一致性，验证了该模型及其解析方法，以及去耦度参数用于铁磁性管道无损检测的可行性，为铁磁性管道物理属性(管道内径、管道磁导率)的涡流法检测提供了一种方法。
기우철자성관도여와류격려/접수선권구성적우합식전수결구，이용패새이함수구건료철자성관도근장와류적우합전수모형，통과대해모형적우합호감분석，분리출철자성관도물리삼수대선권호감적주요영향인소——거우도삼수。문중채용대종량분석법대해모형진행계산，장기결과여ANSYS건모방진、관도전학실험적수출진행료비교분석，결과현시출교호적일치성，험증료해모형급기해석방법，이급거우도삼수용우철자성관도무손검측적가행성，위철자성관도물리속성(관도내경、관도자도솔)적와류법검측제공료일충방법。
The model for the mutual induction of eddy current coupling in a ferromagnetic pipe is presented in form of the Bessel functions referring to a Transmit-Receive coil regime. An important factor is extracted from the model named d which is depended on pipe inner diameter and electromagnetic properties. By comparing the results of the bulk analysis, ANSYS FEM simulation, and practical experiments, a good consistence is realized. The results demonstrates its validation and feasibility for applying the decoupling degree to NDT.