Hysteresis measurements on straight bars and strips
作者:
C.E.Webb,
L.H.Ford,
期刊:
Journal of the Institution of Electrical Engineers
(IET Available online 1930)
卷期:
Volume 68,
issue 404
页码: 1018-1022
年代: 1930
DOI:10.1049/jiee-1.1930.0111
出版商: IEE
数据来源: IET
摘要:
The method of testing straight samples of high-permeability material, by using search-coils for the measurement ofHand eliminating flux leakage from the length under test by means of compensating magnetizing windings, has been previously described in relation to permeability measurements. Its application to hysteresis measurements is found to involve more complicated switching operations, but a comparison of results obtained on bars and strips with those for rings of similar material shows good agreement when compensation is employed at each point on the loop. In the absence of compensation, large differences occur between the loops determined for straight and ring specimens.In tests on magnet-steel bars compensation produces a negligible effect on the results and is unnecessary.A drum controller to perform the switching operations required in carrying out a hysteresis loop under compensated conditions is described.
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