Rail surface fatigue and wear

Fletcher, D. I.; Franklin, FJ; Kapoor, Ajay

doi:10.1533/9781845696788.1.280

Cited by 24 publications

(17 citation statements)

References 62 publications

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“…This is well described in many publications, including [27]. The result is a regular series of cracks, usually located towards the gauge corner of the high rail and crown or field side of low rail (see Fig.…”

Section: Rcf As a Direct Cause Of Broken Railssupporting

confidence: 55%

Rolling contact fatigue, wear and broken rail derailments

Magel

Mutton

Ekberg

et al. 2016

Wear

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Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. NRC Publications Record / Notice d'Archives des publications de CNRC:http://nparc.cisti-icist.nrc-cnrc.gc.ca/eng/view/object/?id=ca2dd2ef-04ac-48b2-9a33-980b4b7ede69 http://nparc.cisti-icist.nrc-cnrc.gc.ca/fra/voir/objet/?id=ca2dd2ef-04ac-48b2-9a33-980b4b7ede69 abstract Rolling contact fatigue (RCF) and wear are inevitable in the wheel/rail system, but resulting failures and derailments need not also be inevitable. Understanding why and under which conditions broken rails and derailments are likely to occur will focus research, inspection and maintenance efforts to minimize their probability. RCF leads to many broken rails, and rails with severe RCF damage are difficult to inspect. Yet wear reduces the extent of crack growth and hence can be beneficial in some cases. On the other hand, wear changes wheel and rail profiles, may expose virgin material to contact stresses, and reduces the section strength, which may lead to higher stress from bending and torsion. These influences are explored together with case studies of operational derailments. Based on this information and the current state of the art -both theoretical and practical -a number of issues are raised which need to be addressed through further developments in understanding and mitigating strategies to reduce the risk of failures from RCF and wear.Crown

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Section: Rcf As a Direct Cause Of Broken Railssupporting

confidence: 55%

Rolling contact fatigue, wear and broken rail derailments

Magel

Mutton

Ekberg

et al. 2016

Wear

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“…Fig. 3a shows fatigue cracks -known in the literature as head checks (1) -and spalling marks (2) [6,7,13]. Fig.…”

Section: Methodsmentioning

confidence: 99%

“…With this in mind, several studies have focused on the parameters affecting the grinding procedures [5,6], optimal maintenance design and profile modification. For instance, in the work performed by De Vries et al [7], the authors studied preventive grinding to reduce maintenance costs by increasing the grinding frequency in tight curves and optimizing profiles.…”

Section: Introductionmentioning

confidence: 99%

Correlations between wear mechanisms and rail grinding operations in a commercial railroad

Cuervo

Santa

Toro

2015

Tribology International

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“…So, the formation mechanism and preventive measures on wheel–rail RCF have caused great concern and have been studied for many years. 1–5 By review of previous works, 6–8 it was found that many factors including material microstructure, contact pressure, lubricant, operational environment, etc. affect the initiation and propagation of RCF cracks of wheel–rail.…”

Section: Introductionmentioning

confidence: 99%

Influence of granularity of grinding stone on grinding force and material removal in the rail grinding process

Wang

Zhou

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part J:

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The objective of this study is to explore the influence of grinding stone granularity on the grinding force and rail material removal behaviors using a rail grinding friction machine. The results indicate that with the increase in granularity, the grinding force, and friction coefficient in the grinding interface obviously increase, which brings about a rise in the hardness and grinding temperature-rise of rail specimens. The increase in the grinding stone granularity causes a fall in the grinding volume and surface roughness of rail materials and brings about stronger vibration in the grinding interface owing to different material removal mechanisms. In view of the experimental results, the optimization of grinding stone granularity is significant for improving the rail grinding efficiency and surface quality.

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Rail surface fatigue and wear

Cited by 24 publications

References 62 publications

Rolling contact fatigue, wear and broken rail derailments

Rolling contact fatigue, wear and broken rail derailments

Correlations between wear mechanisms and rail grinding operations in a commercial railroad

Influence of granularity of grinding stone on grinding force and material removal in the rail grinding process

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