Abstract

The effects of stress on the magnetization of non-oriented silicon steel sheets, were investigated in both the elastic and plastic regions of tensile stress. Magnetization changes and irreversible magnetization changes under tension were measured. Magnetization decreases beyond a plastic tensile stress of 300 MPa. The magnetization change due to tension shows a reversible change. However, the magnetization change due to tension beyond plastic stress shows a permanent decrease. Irreversible magnetization change increases on account of plastic tensile stress. The results obtained in this investigation can be applied to the nondestructive detection of fatigue in metallic magnetic materials.

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