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Investigation of the Top-of-Rail Friction by Field Measurements on Swedish Iron Ore Line
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
2015 (English)In: International Journal of COMADEM, ISSN 1363-7681, Vol. 18, no 2, p. 17-20Article in journal (Refereed) Published
Abstract [en]

Friction management in the railway industry is a well-established technology with the aim of optimizing the friction between the wheel and rail. Determining the friction coefficient (μ) at the wheel-rail interface is therefore important especially for heavy haul lines with higher axle loads. This paper presents an initial study of the top-of-rail friction condition of a line with 30 ton axle load, the Iron Ore Line in the northern part of Sweden. The friction coefficient between the rail and the metal wheel of a portable tribometer was measured at different geographical locations and in different environmental conditions. The effects of precipitation are studied and compared with the effects of top-of-rail friction modifiers.The measurements of non-lubricated line sections showed values of μ≈0.6, compared to μ≈0.3 for areas with, for example, top-of- rail lubrication. In snowy conditions a decrease in friction could also be detected.Keywords: Friction management, Friction measurement, Friction modifier, Heavy haul railway line, Swedish Iron Ore Line.

Place, publisher, year, edition, pages
2015. Vol. 18, no 2, p. 17-20
National Category
Other Civil Engineering
Research subject
Operation and Maintenance
Identifiers
URN: urn:nbn:se:ltu:diva-10008Local ID: 8c296ccf-6ced-4d21-a3d3-2c6742fa8f81OAI: oai:DiVA.org:ltu-10008DiVA, id: diva2:982948
Note
Validerad; 2015; Nivå 1; 20150428 (yonlem)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Lemma, YonasAsplund, MatthiasRantatalo, Matti

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