Fast estimation of the influence of a tensile plastic strain on the magnetic behaviour of electrical steels

Residual stress, hardening, and defects introduced during the cutting process lead to a global degradation of the magnetic properties of electrical steels. Modelling these phenomena requires preliminary measurements beginning by characterizing the influence of plastic strain on the magnetic behaviour. It is proposed in this study to use a hourglass-shaped sample to create a plastic strain gradient and assess magnetic behaviour using a single specimen.