Effects of compressive stress normal to the surface of non-oriented electrical steel sheets

Issue title: 12th International Workshop on 1&2 Dimensional Magnetic Measurement and Testing (2012)

Guest editors: Helmut Pfützner, Georgi Shilyashki and Franz Hofbauer

Article type: Research Article

Authors: Yamamoto, Ken-ichi^{a; *} | Yanase, Shunji^b

Affiliations: [a] University of the Ryukyus, Nakagami, Okinawa, Japan | [b] Gifu University, Yanagido, Gifu, Japan | Institute of Electrodynamics, Microwave and Circuit Engineering, University of Technology, Vienna, Austria

Correspondence: [*] Corresponding author: Ken-ichi Yamamoto, University of the Ryukyus, 1 Senbaru, Nishihara, Nakagami, Okinawa 901-2213, Japan. E-mail: yamamoto@eee.u-ryukyu.ac.jp

Abstract: Changes in permeability and magnetic losses in non-oriented electrical steel sheets resulting from compressive stress have been investigated using a single-sheet tester. A compressive stress of up to 20 MPa is uniformly applied normal to the sheet surface. It is demonstrated that a stress beyond 5 MPa can decrease magnetic losses, including both hysteresis loss and eddy current loss.

Keywords: Magnetic losses, permeability, electrical steel, compressive stress

DOI: 10.3233/JAE-141789

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 44, no. 3-4, pp. 271-278, 2014