Title :
Effect of Strain by Mechanical Punching on Non-Oriented Si-Fe Electrical Sheets for 9-slot Motor Core
Author :
Takezawa, M. ; Kitajima, K. ; Morimoto, Y. ; Yamasaki, J. ; Kaido, C.
Author_Institution :
Kyushu Inst. of Technol., Kitakyushu
Abstract :
In the present work a magnetic domain of a punched non-oriented Si-Fe sheet in a form of 9-slot motor core has been observed with a Kerr microscope. Results have indicated that shear stress by punching process changes domain structure near the edge of the core. It is noted that the length of the area influenced by the stress is comparable to the thickness of the sheet from the edge. The data allows to ease the design of motor cores.
Keywords :
internal stresses; iron alloys; magnetic domains; punching; sheet materials; sheet metal processing; silicon alloys; 9-slot motor core; FeSi; Kerr microscopy; domain structure; magnetic domain; mechanical punching; nonoriented electrical sheets; shear stress; sheet thickness; strain effect; Brushless DC motors; Capacitive sensors; DC motors; Magnetic cores; Magnetic domains; Magnetization; Magnetostatics; Punching; Stress; Teeth;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.374933
