The Attempt of New Approach to Evaluate Surface Integrity

Abstract:

Machined surface of hard steel parts like gears, bearings, camshafts etc. is full of local imperfections which are commonly described in terms of surface integrity. This surface integrity is usually quantified with the level of residual stresses or amplitude of Barkhausen noise signal for instance. The contribution introduces parameter called Sum of Effective Residual Stresses (SERS) to describe the level of surface damage after grinding. Experimental data obtained by X-Ray Diffraction (XRD) and Barkhausen Noise Analysis (BNA) methods of ground gears are shown. The way to use SERS approach for experimental determination of penetration depth of Barkhausen signal in steels is proposed, too.

• Periodical: Defect and Diffusion Forum (Volume 368)
• Pages: 15-19
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.368.15
• Online since: July 2016
• Authors: Jiří Malec*, Filip Červinka, Dominik Blažíček, Janne Suoknuuti
• Keywords: Barkhausen Noise, Grinding, Residual Stress, Surface Integrity

References

[1] B. Karpuschewski, Introduction to micro-magnetic techniques, ICBM-1, Hannover, (1998).

[2] J. Malec, et al., Using Barhausen Noise Analysis for Evaluation of Usability of Different Grinding Machines, ICBM11, Aydin, June (2015).

[3] M.E. Fitzpatrick, et al., Determination of Residual Stresses by X-ray Diffraction, Teddington, September (2005).

[4] S. Tiitto, et al., Spectral Damping in Barkhausen noise, IEEE Transactions on Magnetics, Vol. MAG-li, No. 6, November (1975).