Title :
Measuring system for magnetostriction of silicon steel sheet under AC excitation using optical methods
Author :
Nakase, Tomoya ; Nakano, Masanori ; Fujiwara, Koji ; Takahashi, Norio
Author_Institution :
Dept. of Electr. & Electron. Eng., Okayama Univ., Japan
fDate :
7/1/1998 12:00:00 AM
Abstract :
A measuring system for magnetostriction of silicon steel sheet using optical methods and a single sheet tester has been developed to establish a standard test method for IEC and JIS. Various factors affecting measurement accuracy and reproducibility of the developed system are examined. Two optical instruments, such as a laser Doppler vibrometer and a heterodyne displacement meter, are compared. 3-D characteristics of magnetostriction under ac excitation in the rolling direction are measured up to 2.0 T
Keywords :
Doppler measurement; ferromagnetic materials; iron alloys; magnetic variables measurement; magnetostriction; measurement by laser beam; silicon alloys; 2.0 T; AC excitation; Fe-Si; heterodyne displacement meter; laser Doppler vibrometer; magnetostriction; optical measurement; silicon steel sheet; single sheet tester; IEC standards; Instruments; Magnetostriction; Measurement standards; Optical mixing; Reproducibility of results; Silicon; Standards development; Steel; System testing;
Journal_Title :
Magnetics, IEEE Transactions on
