10.1007%2Fs11249-018-1032-z.pdf (2.44 MB)
Multiscale friction in lubricant-surface systems for high performance transmissions under mild wear
journal contribution
posted on 2018-06-06, 15:17 authored by Ed Humphrey, Nick MorrisNick Morris, Michael Leighton, Ramin RahmaniRamin Rahmani, Homer RahnejatThe lubricant-surface system is complex in nature and can significantly affect the frictional performance of high-performance transmission systems. The complexity stems from the coupled mechanical and chemical phenomena that occur at the interfacial tooth conjunctions. A combined analytical and precision experimental approach is presented to analyse the salient parameters of the lubricant-surface system. A multiscale procedure comprising topographical measurement, pin-on-disc tribometry, atomic force microscopy in lateral force mode, X-ray photo-electron spectroscopy and continuum contact mechanics analysis under mixed non-Newtonian thermo-elastohydrodynamics is used to describe the formation of a tribo-film, as well as wear and frictional characteristics of the lubricant-surface system. The contribution of chemisorbed and physisorbed bonded tribo-film on the boundary coefficient of friction is ascertained at different physical scales. Therefore, the paper presents a novel multiscale analysis, promoting improved understanding of the complex interactions between mechanisms of friction, wear and surface chemistry.
Funding
The authors are grateful to the Engineering and Physical Science Research Council (EPSRC) for the financial support extended to this research through the Doctoral Training Program (DTP). The authors also acknowledge use of facilities within the Loughborough Materials Characterisation Centre (LMCC).
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
Tribology LettersVolume
66Citation
HUMPHREY, E. ... et al, 2018. Multiscale friction in lubricant-surface systems for high performance transmissions under mild wear. Tribology Letters, 66, 77.Publisher
Springer © The Author(s)Version
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/ by/4.0/Acceptance date
2018-05-19Publication date
2018-05-24Copyright date
2018Notes
This is an Open Access Article. It is published by Springer under the Creative Commons Attribution 4.0 International Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/ISSN
1023-8883eISSN
1573-2711Publisher version
Language
- en