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Magnetostriction measurement by using dual heterodyne laser interferometers

Setareh Gorji Ghalamestani (UGent) , Tom Hilgert (UGent) , Lieven Vandevelde (UGent) , Joris JJ Dirckx and Jan Melkebeek (UGent)
(2010) IEEE TRANSACTIONS ON MAGNETICS. 46(2). p.505-508
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Abstract
Electrical machines and transformers have a core built out of laminations of ferromagnetic materials. A portion of the vibrations and noise of these devices is due to magnetic forces and magnetostriction arising from the magnetic core. Magnetic forces are well known, and analytical methods are extensively used to calculate them. Magnetostriction can be defined as the deformation of the ferromagnetic material in the presence of a magnetic field. Unlike magnetic forces, magnetostriction shows a rather complex behavior. It varies for every material, and it depends on the applied magnetic field and external pressure. Therefore, magnetostrictive behavior of every material needs to be determined experimentally by means of strain measurements. Strain gauge measurement techniques have been used before at the Electrical Energy Laboratory (EELAB), Ghent University, Ghent, Belgium. In this paper, a new measurement method using dual heterodyne laser interferometers is proposed to overcome the drawbacks of the old method. The proposed measurement setup and the working principles are explained. The possibility to apply both techniques on one and the same sample can also reveal some interesting results about the quality of both techniques.
Keywords
laser interferometry, Heterodyne laser interferometer, Magnetostriction, magnetostriction measurement, STEEL

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Chicago
Gorji Ghalamestani, Setareh, Tom Hilgert, Lieven Vandevelde, Joris JJ Dirckx, and Jan Melkebeek. 2010. “Magnetostriction Measurement by Using Dual Heterodyne Laser Interferometers.” Ieee Transactions on Magnetics 46 (2): 505–508.
APA
Gorji Ghalamestani, S., Hilgert, T., Vandevelde, L., Dirckx, J. J., & Melkebeek, J. (2010). Magnetostriction measurement by using dual heterodyne laser interferometers. IEEE TRANSACTIONS ON MAGNETICS, 46(2), 505–508. Presented at the 19th International Conference on Soft Magnetic Materials.
Vancouver
1.
Gorji Ghalamestani S, Hilgert T, Vandevelde L, Dirckx JJ, Melkebeek J. Magnetostriction measurement by using dual heterodyne laser interferometers. IEEE TRANSACTIONS ON MAGNETICS. 2010;46(2):505–8.
MLA
Gorji Ghalamestani, Setareh et al. “Magnetostriction Measurement by Using Dual Heterodyne Laser Interferometers.” IEEE TRANSACTIONS ON MAGNETICS 46.2 (2010): 505–508. Print.
@article{856078,
  abstract     = {Electrical machines and transformers have a core built out of laminations of ferromagnetic materials. A portion of the vibrations and noise of these devices is due to magnetic forces and magnetostriction arising from the magnetic core. Magnetic forces are well known, and analytical methods are extensively used to calculate them. Magnetostriction can be defined as the deformation of the ferromagnetic material in the presence of a magnetic field. Unlike magnetic forces, magnetostriction shows a rather complex behavior. It varies for every material, and it depends on the applied magnetic field and external pressure. Therefore, magnetostrictive behavior of every material needs to be determined experimentally by means of strain measurements. Strain gauge measurement techniques have been used before at the Electrical Energy Laboratory (EELAB), Ghent University, Ghent, Belgium. In this paper, a new measurement method using dual heterodyne laser interferometers is proposed to overcome the drawbacks of the old method. The proposed measurement setup and the working principles are explained. The possibility to apply both techniques on one and the same sample can also reveal some interesting results about the quality of both techniques.},
  author       = {Gorji Ghalamestani, Setareh and Hilgert, Tom and Vandevelde, Lieven and Dirckx, Joris JJ and Melkebeek, Jan},
  issn         = {0018-9464},
  journal      = {IEEE TRANSACTIONS ON MAGNETICS},
  keywords     = {laser interferometry,Heterodyne laser interferometer,Magnetostriction,magnetostriction measurement,STEEL},
  language     = {eng},
  location     = {Turin, Italy},
  number       = {2},
  pages        = {505--508},
  title        = {Magnetostriction measurement by using dual heterodyne laser interferometers},
  url          = {http://dx.doi.org/10.1109/TMAG.2009.2033125},
  volume       = {46},
  year         = {2010},
}
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