열교환기 전열관의 결함에 대한 와전류 탐상 수치해석방법

Numerical Analysis Methods for Eddy Current Testing for Heat Exchanger Tube with Axi-symmetric Defects

  • 김창욱 (숭실대학교 전기공학과) ;
  • 서장원 (숭실대학교 전기공학과) ;
  • 김신 (숭실대학교 전기공학과) ;
  • 이향범 (숭실대학교 전기공학과)
  • Kim, Chang-Wook (Department of Electrical Engineering, Soongsil University) ;
  • Seo, Jang-Won (Department of Electrical Engineering, Soongsil University) ;
  • Kim, Shin (Department of Electrical Engineering, Soongsil University) ;
  • Lee, Hyang-Beom (Department of Electrical Engineering, Soongsil University)
  • 발행 : 2000.07.17

초록

In this paper, a numerical analysis algorithm of eddy current testing(ECT) for heat exchanger tube with axi-symmetric defects using finite element method(FEM) is presented. In the ECT FEM analysis, we used trianglular and rectangular elements for exact signal of ECT for variable shape of defects. This paper presents a systematic and efficient numerical analysis algorithm for ECT. We employ the LU decomposition and Cholesky method for solving the system matrix. This numerical analysis algorithm is effectively applied to heat exchanger tube with defects.

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