测控技术2012，Vol.31Issue(5)：131-135,5.
基于远场涡流法的管道缺陷识别的有限元仿真研究
Finite Element Research of Defects Detection in Pipeline Based on Remote Field Eddy Current
摘要
Abstract
Remote field eddy current( RFEC) testing is an important method in nondestructive testing( NDT) and has more advantages than other nondestructive testing methods. On the basis of RFEC theory, RFEC and axis-symmetric defects in two-dimension are simulated and analyzed by using finite element method ( FEM). Firstly, mathematical model of RFEC is built up on the basis of Maxwell equation and provides guidance on the finite element analysis. Secondly, the simulation environment is built up with finite element software, and RFEC is simulated in two-dimension, the results determine the parameters of the excitation source and the testing device. Finally, the simulation is made among multiple axis-symmetric defects in two-dimension, and the results are compared to illustrate interactions among defect signals and find the characteristic quantities to identify the defects. The research provides a valueable reference on the three-dimension simulation, testing device design and defects identification.关键词
远场涡流/无损检测/缺陷识别/有限元法Key words
remote field eddy current( RFEC)/ nondestructive testing( NDT)/ defects identification/ finite element method( FEM)分类
矿业与冶金引用本文复制引用
肖丹,师奕兵,黄博..基于远场涡流法的管道缺陷识别的有限元仿真研究[J].测控技术,2012,31(5):131-135,5.基金项目
中海油服企业发展基金(1017CS-A01C234) （1017CS-A01C234）
