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Publications in Scientific Journals:

H. Pfützner, G. Krismanic:
"The Needle Method for Induction Tests: Sources of Error";
IEEE Transactions on Magnetics, 40 (2004), 3; 1610 - 1616.



English abstract:
The regional determination of flux density in laminations of soft magnetic materials is usually performed by means of a single-winding coul through drilled holes. An alternative method is the use of needle contacts wich are arranged at lamination surface points through the surface coating. The method is simple and non-destructive. However, concern exists whether the results prove to be fully equivalent if the investigated region exhibits quasi-local induction extremum, a sysxtematic error arises which however can be neglected in practice. On the other hand, strong errors may arise if the interesting in-plane flux is combined with asymmetric off-plane flux. This is due to the fact that the mthod takes advantage of the surface eddy current configuration wich reflects both components of flux.

German abstract:
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Online library catalogue of the TU Vienna:
http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04967414


Created from the Publication Database of the Vienna University of Technology.