The dependence of losses on stress and orientation of oriented silicon-iron

Abstract

The dependence of 60 Hz‐1.0 T losses on uniaxial tensile and compressive stress states was characterized for (110) [001] 3% Si‐Fe sheet as a function of ϑ, the angle between the [001] direction and the applied field and stress direction. Tensile stress produced lower losses compared to the zero stress state for 0°?ϑ?10° and 55°?ϑ?90°. Compressive stress generally increased losses compared to zero stress and to tensile stress of the same magnitude, with two noteworthy exceptions. For ϑ=55° losses were approximately independent of stress, while losses under compressive stress were less than losses under tensile stress of the same magnitude for 30°?ϑ<55°.