This paper outlines work carried out to produce maps af rail material wear coefficients taken from laboratory tests run on twin disc and pin-on-disc machines as well as those derived from measurements taken in the field. Wear transitions are identified using the maps and defined in terms of slip and contact pressure. Up to five wear regimes and transitions have been identified. Wear regimes are related to expected wheel/rail contact conditions and contact points (rail head/wheel tread and rail gauge/wheel flange). Surface and sub-surface morphologies are discussed and comparisons are made between field and laboratory data. Following conclusions can be drawn: 1. Rail steel wear rates have reduced by up to an order of magnitude for the severe wear regime in the last 20 years. For the mild wear regime it is hard to detect any change for the wheel/rail material combinations studied. 2. By combining the wear maps with multi-body simulations the likely wear rates and wear regimes for rail head/wheel tread and rail gauge/wheel flange contacts can be predicted.3. Gaps have been identified in current knowledge both in terms of rail steel wear data and wear mechanisms that provide a focus for new research in this area.
Mapping rail wear transitions
2003
10 Seiten, 11 Bilder, 1 Tabelle, 16 Quellen
Aufsatz (Konferenz)
Englisch
British Library Conference Proceedings | 2003
|Mapping rail wear regimes and transitions
Tema Archiv | 2004
|Mapping railway wheel material wear mechanisms and transitions
British Library Online Contents | 2010
|Mapping railway wheel material wear mechanisms and transitions
SAGE Publications | 2010
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Online Contents | 2010
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