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L. Buckley-Johnstone¹, M. Harmon², R. Lewis², C. Hardwick³ and R. Stock⁴

¹Department of Mechanical Engineering, University of Sheffield, United Kingdom
²Centre for Doctoral Training in Integrated Tribology, University of Sheffield, United Kingdom
³L.B. Foster Rail Technologies Ltd, Sheffield, United Kingdom
⁴L.B. Foster Rail Technologies Ltd, Burnaby, Canada

doi:10.4203/ccp.110.148

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L. Buckley-Johnstone, M. Harmon, R. Lewis, C. Hardwick, R. Stock, "Assessment of Friction Modifiers Performance using Two Different Laboratory Test-Rigs", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 148, 2016. doi:10.4203/ccp.110.148

Keywords: wheel rail contact, friction modifier, scaling, twin disc testing, wear rate.

Summary

This paper describes two methods for assessing friction modifier performance carried out on two different testing scales. Study A used wear data from a full scale rig test at Voestalpine Schienen GmbH and compared it with wear data from twin disc tests using the SUROS machine at The University of Sheffield. Study B compared 'retentivity' data from a full scale rig at The University of Sheffield and the SUROS tests. Study A concluded a good correlation between the two scales although assumptions made in the full scale contact calculation introduce a large spread into the results. There was a greater correlation between the two data sets at more severe contact conditions. Study B showed a different baseline coefficient of traction between the two scales and a longer test length is required to fully evaluate the 'retention' of the friction modifier on the full scale rig.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 110 PROCEEDINGS OF THE THIRD INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 148 Assessment of Friction Modifiers Performance using Two Different Laboratory Test-Rigs L. Buckley-Johnstone¹, M. Harmon², R. Lewis², C. Hardwick³ and R. Stock⁴ ¹Department of Mechanical Engineering, University of Sheffield, United Kingdom ²Centre for Doctoral Training in Integrated Tribology, University of Sheffield, United Kingdom ³L.B. Foster Rail Technologies Ltd, Sheffield, United Kingdom ⁴L.B. Foster Rail Technologies Ltd, Burnaby, Canada doi:10.4203/ccp.110.148 purchase the full-text of this paper Full Bibliographic Reference for this paper L. Buckley-Johnstone, M. Harmon, R. Lewis, C. Hardwick, R. Stock, "Assessment of Friction Modifiers Performance using Two Different Laboratory Test-Rigs", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 148, 2016. doi:10.4203/ccp.110.148 Keywords: wheel rail contact, friction modifier, scaling, twin disc testing, wear rate. Summary This paper describes two methods for assessing friction modifier performance carried out on two different testing scales. Study A used wear data from a full scale rig test at Voestalpine Schienen GmbH and compared it with wear data from twin disc tests using the SUROS machine at The University of Sheffield. Study B compared 'retentivity' data from a full scale rig at The University of Sheffield and the SUROS tests. Study A concluded a good correlation between the two scales although assumptions made in the full scale contact calculation introduce a large spread into the results. There was a greater correlation between the two data sets at more severe contact conditions. Study B showed a different baseline coefficient of traction between the two scales and a longer test length is required to fully evaluate the 'retention' of the friction modifier on the full scale rig. purchase the full-text of this paper (price £22) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £85 +P&P)
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