Effect of Laser Stress on Vector Magnetic Properties of Electrical Steel Sheets

Experimental impact of pulsed laser irradiation, scribing and ablation on 2-D scalar and vector magnetic losses and general properties of Grain-Oriented Electrical Steels

“…8). Indeed, there is a clear difference of behavior for ablation laser treated samples notably at 50 Hz whereas for Irr., which allows comparable reduction rates to the ones obtained in [6] under similar experimental conditions, alternating and rotating behaviors are very close. In [7], it is mentioned that, in the case of irradiation, Lancet (zone n°3 in Fig.…”

“…Still, authors investigate the rotational behavior [3]- [4], its connection to unidirectional components and the dependence on the angle between applied field and the RD [5]. Meanwhile, few started to investigate the impact of an irradiation laser process on the rotational magnetic behavior of GOES [6] but recent advancement in laser technologies revealed new possibilities for beneficial laser treatments [7] that have not been investigated under rotational fields yet. The present paper includes an experimental study of three laser process configurations that are investigated and compared in terms of impacts on the power losses of GOES for both unidirectional (in RD, but also in the Transverse Direction (TD)) and rotational excitation fields.…”