Computational Technology Resources - CCP

A. Mazzù¹, C. Petrogalli¹, M. Lancini¹, A. Ghidini² and M. Faccoli¹

¹Dipartimento di Ingegneria Meccanica e Industriale, Università degli Studi di Brescia, Italy
²Lucchini RS, Lovere, Italy

doi:10.4203/ccp.110.171

purchase the full-text of this paper

, "Rolling Contact Fatigue Assessment of Railway Wheel Steels with Wet Contact", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 171, 2016. doi:10.4203/ccp.110.171

Keywords: railway wheel steels, rolling contact fatigue, wear, ratcheting, crack propagation.

Summary

The interaction of wear and rolling contact fatigue (RCF) in railway wheel steels subject to wet contact was studied using experiments and numerical simulations. Both surface and subsurface fatigue was considered. The experiments were carried out by a two-disc machine with specimens of three different wheel steels, coupled with the same rail steel. Some couples were tested with fully wet contact with different sliding-rolling ratios, others in dry contact and subsequently in wet contact.

In the dry-wet tests severe surface damage occurred after a few cycles during the wet phase; in fully wet tests both surface and subsurface origin RCF occurred at a higher cycle number than in mixed tests. The role of wear in delaying the occurrence of surface RCF was experimentally proven. The observed phenomena were evaluated by means of a numerical code aimed at simulating different concurrent phenomena in cyclic contact.

purchase the full-text of this paper (price £22)

go to the previous paper
go to the next paper
return to the table of contents
return to the book description
purchase this book (price £85 +P&P)

	Computational & Technology Resources an online resource for computational, engineering & technology publications
	not logged in - login
Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 110 PROCEEDINGS OF THE THIRD INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 171 Rolling Contact Fatigue Assessment of Railway Wheel Steels with Wet Contact A. Mazzù¹, C. Petrogalli¹, M. Lancini¹, A. Ghidini² and M. Faccoli¹ ¹Dipartimento di Ingegneria Meccanica e Industriale, Università degli Studi di Brescia, Italy ²Lucchini RS, Lovere, Italy doi:10.4203/ccp.110.171 purchase the full-text of this paper Full Bibliographic Reference for this paper , "Rolling Contact Fatigue Assessment of Railway Wheel Steels with Wet Contact", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 171, 2016. doi:10.4203/ccp.110.171 Keywords: railway wheel steels, rolling contact fatigue, wear, ratcheting, crack propagation. Summary The interaction of wear and rolling contact fatigue (RCF) in railway wheel steels subject to wet contact was studied using experiments and numerical simulations. Both surface and subsurface fatigue was considered. The experiments were carried out by a two-disc machine with specimens of three different wheel steels, coupled with the same rail steel. Some couples were tested with fully wet contact with different sliding-rolling ratios, others in dry contact and subsequently in wet contact. In the dry-wet tests severe surface damage occurred after a few cycles during the wet phase; in fully wet tests both surface and subsurface origin RCF occurred at a higher cycle number than in mixed tests. The role of wear in delaying the occurrence of surface RCF was experimentally proven. The observed phenomena were evaluated by means of a numerical code aimed at simulating different concurrent phenomena in cyclic contact. purchase the full-text of this paper (price £22) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £85 +P&P)
Back to top	©Civil-Comp Limited 2023 - terms & conditions