Theory of ferromagnetic hysteresis: evaluation of stress from hysteresis curves
1988; IEEE Magnetics Society; Volume: 24; Issue: 6 Linguagem: Inglês
10.1109/20.92289
ISSN1941-0069
AutoresP. Garikepati, Tieyan Chang, David Jiles,
Tópico(s)Non-Destructive Testing Techniques
ResumoA recent extension of the theory of ferromagnetic hysteresis to include the effects of a constant applied stress uses an effective field H/sub sigma / that depends on the stress and the rate of change of magnetostriction with magnetization. The extended theory is used here to derive a particularly simple expression for the variation with stress of the anhysteretic differential susceptibility at M=O, H=O. The theoretical prediction is compared with experimental results and shows excellent agreement. This expression forms the basis for a novel technique of evaluating stress in ferromagnetic steels. >
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