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Title: Boundary interactions of rough non-gaussian surfaces
Authors: Leighton, Michael
Morris, Nicholas J.
Gore, Michael
Rahmani, Ramin
Rahnejat, Homer
King, P.D.
Keywords: Contact mechanics
Rough surfaces
Plateau honed
Advanced cylinder liners
Issue Date: 2016
Publisher: © IMechE (SAGE)
Citation: LEIGHTON, M. ... et al., 2016. Boundary interactions of rough non-gaussian surfaces. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, doi: 10.1177/1350650116656967
Abstract: Surface topography is important as it influences contact load-carrying capacity and operational efficiency through generated friction, as well as wear. As a result, a plethora of machining processes and surface finishing techniques have been developed. These processes yield topographies, which are often non-Gaussian, with roughness parameters that alter hierarchically according to their interaction heights. They are also subject to change through processes of rapid initial running-in wear as well as any subsequent gradual wear and embedding. The stochastic nature of the topography makes for complexity of contact mechanics of rough surfaces, which was first addressed by the pioneering work of Greenwood and Williamson, which among other issues is commemorated by this contribution. It is shown that their seminal contribution, based on idealised Gaussian topography and mean representation of asperity geometry should be extended for practical applications where surfaces are often non-Gaussian, requiring the inclusion of surface-specific data which also evolve through process of wear. The paper highlights a process dealing with practical engineering surfaces from laboratory-based testing using a sliding tribometer to accelerated fired engine testing for high performance applications of cross-hatched honed cylinder liners. Such an approach has not hitherto been reported in literature.
Description: This article was published in the journal, Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology [Sage Publications © IMechE]. The definitive version is available at: http://dx.doi.org/10.1177/1350650116656967
Sponsor: The authors would like to thank the UK Engineering and Physical Sciences Research Council (EPSRC) for the sponsorship of this research under the Encyclopaedic Program Grant (www.encyclopaedic.org).
Version: Accepted for publication
DOI: 10.1177/1350650116656967
URI: https://dspace.lboro.ac.uk/2134/21977
Publisher Link: http://dx.doi.org/10.1177/1350650116656967
ISSN: 1350-6501
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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