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M. Messaadi¹, M. Steenbergen² and I. Shevtsov³

¹MSMP-EA7350, Arts et Métiers ParisTech, Lille, France
²Delft University of Technology, Section of Railway Engineering, Faculty of Civil Engineering and Geoscience, Delft, The Netherlands
³ProRail, Department of Civil Technology, Infra Management Rail-Systems, Utrecht, The Netherlands

doi:10.4203/ccc.1.21.24

M. Messaadi, M. Steenbergen, I. Shevtsov, "Spalling defect of head-hardened rail in railway turnouts", in J. Pombo, (Editor), "Proceedings of the Fifth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 1, Paper 21.24, 2022, doi:10.4203/ccc.1.21.24

Keywords: head-hardened rails, turnouts loading, rail surface defects, surface and sub-surface cracking, non-metallic inclusions, non-metallic inclusions, surface hardness profile.

Abstract

This paper investigates the spalling degradation process that could be involved in railway turnouts. By considering the network’s failed rails, metallographic examinations revealed the development of subsurface micro-cracks attributed mainly to the non-metallic inclusions. Using Murakami & Yanase equations, the critical size of inclusions leading to the subsurface initiation is discussed in the case of a headhardened rail (350HT) and a standard one (R260). Our findings suggest that the available studies, such as the Kitagawa-Takahashi diagram, overestimate this size on the rail’s top surface.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 1 PROCEEDINGS OF THE FIFTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 21.24 Spalling defect of head-hardened rail in railway turnouts M. Messaadi¹, M. Steenbergen² and I. Shevtsov³ ¹MSMP-EA7350, Arts et Métiers ParisTech, Lille, France ²Delft University of Technology, Section of Railway Engineering, Faculty of Civil Engineering and Geoscience, Delft, The Netherlands ³ProRail, Department of Civil Technology, Infra Management Rail-Systems, Utrecht, The Netherlands doi:10.4203/ccc.1.21.24 Full Bibliographic Reference for this paper M. Messaadi, M. Steenbergen, I. Shevtsov, "Spalling defect of head-hardened rail in railway turnouts", in J. Pombo, (Editor), "Proceedings of the Fifth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 1, Paper 21.24, 2022, doi:10.4203/ccc.1.21.24 Keywords: head-hardened rails, turnouts loading, rail surface defects, surface and sub-surface cracking, non-metallic inclusions, non-metallic inclusions, surface hardness profile. Abstract This paper investigates the spalling degradation process that could be involved in railway turnouts. By considering the network’s failed rails, metallographic examinations revealed the development of subsurface micro-cracks attributed mainly to the non-metallic inclusions. Using Murakami & Yanase equations, the critical size of inclusions leading to the subsurface initiation is discussed in the case of a headhardened rail (350HT) and a standard one (R260). Our findings suggest that the available studies, such as the Kitagawa-Takahashi diagram, overestimate this size on the rail’s top surface. download the full-text of this paper (PDF, 10 pages, 1003 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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