電磁鋼板板厚方向圧縮応力下における磁気特性測定法の検討

抄録

In designing motors, the magnetic properties of electrical steel sheets in the actual conditions must be grasped. In particular, the stress dependence of iron loss is important. This paper describes a newly developed apparatus to measure 2-D magnetic properties (properties under the arbitrary alternating and rotating flux conditions) of an electrical steel sheet in applying compressive stress normal to its surface. This apparatus has the flux density sensor with a thin needle probe composed of sputtered copper foils on the electrical steel sheet. The magnetic properties can be measured under the uniform stress condition throughout the evaluation area.