FEM modelling techniques of magnetic flux leakage-type NDT for ferromagnetic plate inspections

被引：74

作者：

Al-Naemi, F. I. ^{[1
]}

Hall, J. P. ^{[1
]}

Moses, A. J. ^{[1
]}

机构：

[1] Cardiff Univ, Cardiff Sch Engn, Wolfson Ctr Magnet Technol, Cardiff CF24 3AA, S Glam, Wales

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2006年 / 304卷 / 02期

关键词：

Magnetic Flux leakage; Nondestructive testing; Finite element method;

D O I：

10.1016/j.jmmm.2006.02.225

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic flux leakage (MFL) method is commonly used as an inspection technique in the petrochemical, transportation, energy and metal industries. This paper shows how the finite element method techniques can be utilized to model a MFL system. It compares the predicted MFL signals from 2D and 3D models and shows that a signal obtained from 2D models is much larger than 3D models, which is attributed to higher saturation level in the area of the defect in 2D models. This paper also presents the modeled leakage flux pro. le along the direction of the axial length of the excitation yoke length. It is considered that this technique will help in the calibration of the sensors that are used in MFL sensing systems. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：E790 / E793

页数：4