Title: Comparative measurement of residual stresses with the method based on the magnetic Barkhausen noise and the relaxation method

Authors: P. Zerovnik, J. Grum

Addresses: Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, 1000 Ljubljana, Slovenia. ' Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, 1000 Ljubljana, Slovenia

Abstract: For an efficient prediction of residual stresses in a material or a machine part, the non-destructive method based on the magnetic Barkhausen noise is, among others, employed in practice. An experimental system developed at home and including measuring and assessment units has proved to be very efficient in various applications of surface hardening or cold hardening, and heat treatment.

Keywords: magnetic Barkhausen noise; electrochemical removal; heat treatment; residual stresses; surface hardening; cold hardening; nondestructive testing; NDT; relaxation; surface integrity; microstructure; stress prediction.

DOI: 10.1504/IJMMP.2006.011647

International Journal of Microstructure and Materials Properties, 2006 Vol.1 No.3/4, pp.321 - 333

Published online: 07 Dec 2006 *

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