DocumentCode
811755
Title
Calculation of the alternating magnetic field near a metal surface
Author
XinShan MA
Author_Institution
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Volume
28
Issue
2
fYear
1992
fDate
3/1/1992 12:00:00 AM
Firstpage
1328
Lastpage
1331
Abstract
A medium-addition method and its recent development are recommended for calculating the 2-D alternating magnetic field in the vicinity of a defect. A fictitious medium with negative conductivity is suggested to simulate the defect. The prominent advantages of this method are that it requires much less computer capacity and is time saving. It is concluded that a medium-addition method can be used to solve certain electromagnetic field problems in nondestructive testing if the media are linear and the defect is a tiny crack or a small hole
Keywords
Green´s function methods; eddy current testing; electromagnetic field theory; nondestructive testing; 2D field; Green´s function; alternating magnetic field; defect vicinity; eddy current testing; electromagnetic field problems; medium-addition method; metal surface; nondestructive testing; small hole; tiny crack; Computational modeling; Conductivity; Current density; Eddy currents; Electromagnetic fields; Integral equations; Magnetic fields; Magnetic flux; Nondestructive testing; Steel;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.123936
Filename
123936
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