Analytic model calculation of magnetic field in a magnetic half‐space due to surface magnetic charge

Date
1993-05-15
Authors
Chen, Z. J.
Govindaraju, Madhav
Jiles, David
Jiles, David
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Ames Laboratory
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Ames Laboratory
Abstract

By analogy with electrostatic field, a simple analytic model is presented on the distribution of magnetic field inside a test material as a result of surface inspection with a magnetic probe. According to this model, the penetration depth of the magnetic field is defined and the permeability of the material at different depths is calculated. Finally, the magnetic flux inside the inspection head when placed on samples of different thicknesses is calculated and compared with experimental results.

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The following article appeared in Journal of Applied Physics 73 (1993): 6858 and may be found at http://dx.doi.org/10.1063/1.352462.

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