Differential wear modelling – Effect of weld-induced material inhomogeneity on rail surface quality

Matin Sh. Sichani, Yann Bezin

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A methodology is introduced to enable prediction of differential wear along the rail due to the presence of geometrical imperfections and microstructural inhomogeneities. The method incorporates vehicle-track dynamic interaction, wheel-rail contact and wear modelling in order to predict long-term longitudinal rail profile evolution. The effect of different contact and wear modelling features on the results is investigated. As a case study, the differential rail wear due to material inhomogeneity caused by rail head weld repairs is considered. It is concluded that, regardless of the magnitude of hardness variation within the heat affected zone, the long-term surface degradation can be minimized by limiting the length over which the variation occurs.
LanguageEnglish
Pages43-52
Number of pages10
JournalWear
Volume406-407
Early online date28 Mar 2018
DOIs
Publication statusPublished - 15 Jul 2018

Fingerprint

rails
Surface properties
Rails
Welds
inhomogeneity
Wear of materials
heat affected zone
Railroad tracks
Heat affected zone
wheels
Wheels
vehicles
Repair
hardness
Hardness
methodology
degradation
Degradation
Defects
defects

Cite this

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title = "Differential wear modelling – Effect of weld-induced material inhomogeneity on rail surface quality",
abstract = "A methodology is introduced to enable prediction of differential wear along the rail due to the presence of geometrical imperfections and microstructural inhomogeneities. The method incorporates vehicle-track dynamic interaction, wheel-rail contact and wear modelling in order to predict long-term longitudinal rail profile evolution. The effect of different contact and wear modelling features on the results is investigated. As a case study, the differential rail wear due to material inhomogeneity caused by rail head weld repairs is considered. It is concluded that, regardless of the magnitude of hardness variation within the heat affected zone, the long-term surface degradation can be minimized by limiting the length over which the variation occurs.",
keywords = "Non-uniform wear, Railway, Cupping, Rail head repair, Rail weld, Differential wear",
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Differential wear modelling – Effect of weld-induced material inhomogeneity on rail surface quality. / Sh. Sichani, Matin; Bezin, Yann.

In: Wear, Vol. 406-407, 15.07.2018, p. 43-52.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Sh. Sichani, Matin

AU - Bezin, Yann

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AB - A methodology is introduced to enable prediction of differential wear along the rail due to the presence of geometrical imperfections and microstructural inhomogeneities. The method incorporates vehicle-track dynamic interaction, wheel-rail contact and wear modelling in order to predict long-term longitudinal rail profile evolution. The effect of different contact and wear modelling features on the results is investigated. As a case study, the differential rail wear due to material inhomogeneity caused by rail head weld repairs is considered. It is concluded that, regardless of the magnitude of hardness variation within the heat affected zone, the long-term surface degradation can be minimized by limiting the length over which the variation occurs.

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KW - Railway

KW - Cupping

KW - Rail head repair

KW - Rail weld

KW - Differential wear

U2 - 10.1016/j.wear.2018.03.019

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