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http://dx.doi.org/10.4283/JKMS.2014.24.6.171

A Study on the Design of RFECT System for Ferromagnetic Pipelines  

Lee, Yu Ki (Dept. of Electrical and Computer Engineering, Pusan National University)
Kim, Hui Min (Dept. of Electrical and Computer Engineering, Pusan National University)
Park, Gwan Soo (Dept. of Electrical and Computer Engineering, Pusan National University)
Publication Information
Journal of the Korean Magnetics Society / v.24, no.6, 2014 , pp. 171-178 More about this Journal
Abstract
Remote Field Eddy Current Testing (RFECT), one of the ways which is a nondestructive testing using electromagnetic fields, can make up for Magnetic Flux Leakage (MFL) weaknesses and general Eddy Current Testing (ECT) weaknesses which is an occurrence of a huge friction force or disadvantage of detecting defects on the outer wall. So many of institutes and laboratories have studied on RFECT for the past 50 years. But There is a lack of discussion about a study on eddy current and magnetic field distributions in a pipe wall and designing of RFECT exciter coil. In this paper, eddy current and magnetic field distributions in a pipe wall and influence of altering variables are analyzed. Also, the optimal design algorithm about the RFECT Exciter coil are proposed, and influence on defect signals caused by alteration of its shape is analyzed.
Keywords
remote field eddy current testing; nondestructive testing; pipe defect detection; design of RFECT exciter coil; finite elements method;
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