Title :
Calculation of the alternating magnetic field near a metal surface
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
fDate :
3/1/1992 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
