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A non-destructive method to determine residual stress in drawn wires based on magnetic measurements

Suliga M., Borowik L., Chwastek K., Pawlik P.

Przegląd Elektrotechniczny

2014

R. 90, nr 12

161--164

Estimation of residual stress in drawn wires is an important issue in contemporary metallurgy. The present paper considers the possibility to use a non-destructive method based on magnetic measurements for this purpose. The Jiles-Atherton-Sablik model is used for the description of hysteresis loop.

Oszacowanie poziomu naprężeń szczątkowych w drutach podczas procesu ich wytwarzania jest istotnym zagadnieniem we współczesnej metalurgii. W niniejszej pracy rozważono możliwość wykorzystania do tego celu metody nieniszczącej, opartej na pomiarach magnetycznych. Model Jilesa-Athertona-Sablika wykorzystano do opisu pętli histerezy magnetycznej.

Modelling of Mechatronic Properties of Amorphous Magnetic Materials

Szewczyk R., Bieńkowski A.

Machine Dynamics Problems

2004

Vol. 28, No. 4

127-132

Paper presents new idea of extension of J-A-S model which enable more effective modelling of the influence of mechanical stresses on magnetic properties of amorphous alloys. In this extension, the influence of stresses on all seven parameters of J-A-S model is taken into consideration. Presented in the paper mathematical simulations was made on the base of experimental results obtained for Fe₇₈Si₁₃13 B₉ amorphous alloy. In experiment uniform stress were achieved in the ring-shape sample due to special, mechanical system of backings. The Hook-Jevis optimisation method as well as evolutionary strategies were used for calculation of the hysteresis loops. Changes in model parameters are shown as function of compressive stress. Based on model interpretation of changes of mechatronic properties of core of inductive component is also presented and discussed.