Three-Dimensional FEM Analysis of Electromagnetic Inspection of Outer Side Defects on Steel Tube Using Inner Coil

Author

Gotoh, Y. ; Takahashi, N.

Author_Institution

Kurume Nat. Coll. of Technol., Fukuoka

Volume

43

Issue

4

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

1733

Lastpage

1736

Abstract

Steel tubes are used in the heat exchanger in the petrochemical plant. Since these steel tubes in the heat exchanger are stored as a bundle, it is necessary to inspect the defects of these tubes from the inside of tube. In this paper, problems in applying the alternating flux leakage testing method for the inspection of the outer side defect on steel tube are examined using 3-D finite element method. The features of detecting property of outer side defect using an inner coil at low-frequency are investigated by analyzing the flux and current distribution. It is shown that the inspection of the outer side defect on a steel tube with cooling aluminum fin is possible using the proposed method

Keywords

coils; current distribution; finite element analysis; flaw detection; heat exchangers; inspection; petrochemicals; pipes; steel; 3D finite element method; cooling aluminum; current distribution; electromagnetic inspection; flux leakage testing method; heat exchanger; inner coil; petrochemical plants; steel tube defects; three-dimensional FEM analysis; Coils; Computer vision; Cooling; Current distribution; Electromagnetic analysis; Finite element methods; Inspection; Petrochemicals; Steel; Testing; Alternating flux leakage testing method; eddy current; nondestructive inspection; nonniformity of permeability and conductivity; outer side defect;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2007.892507

Filename

4137724