A procedure and device for calibration-free determination of residual compression stresses in low-carbon steels deformed by tension

Resumo

A procedure for determining the residual compression stresses in tension-deformed low-carbon steels has been proposed that does not involve pre-calibration of the device with standard samples for the case where magnetic anisotropy is mainly determined by mechanical compression stresses. A new design of the attachable measuring transducer is presented for experimental determination of the induced magnetic-anisotropy field within local areas of lump ferromagnetic objects. The legitimacy of evaluating compression stresses with this procedure has been proved experimentally.