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Title: Surface conditioning of carbon-fiber ceramic rotors against organic pads
Authors: Swarbrick, Arthur L.
Wu, Houzheng
Issue Date: 2012
Publisher: © SAE International
Citation: SWARBRICK, A.L. and WU, H.Z., 2012. Surface conditioning of carbon-fiber ceramic rotors against organic pads. SAE Technical Paper 2012-01-1833.
Series/Report no.: SAE Technical Papers;2012-01-1833
Abstract: Carbon - fibre reinforced ceramic composites are seeing wider use with performance and prestige road vehicles as brake rotors. They offer numerous advantages over grey cast iron (GCI) equivalents, primarily in their reduced density and improved maximum servicing temperature. Their extremely low wear rates imply that they have the potential to outlast their GCI counterparts several times over. Conditioning the surface of the rotor prior to friction testing can aid the engineers to improve and tailor the subsequent performance to the design requirements. In this paper, we are presenting the development of such surface conditioning procedures through a screening study on a laboratory scale bench top dynamometer, followed by validation on an industry scale dynamometer under an industry standard AK Master testing regime. The study demonstrates that surface conditioning can produce a significant impact on the friction performance of non-metallic rotors when they are coupled with organic pads. The friction surfaces are characterised by using analytical techniques, including surface profiling, hardness and indentation testing, optical and electron microscopy. It is noted that conditioning can lead to a more sustainable friction surface through enhancing both mechanical and chemical bindings on the friction surface of the rotors . We will discuss the possible factors that could fundamentally govern the friction performance of the friction couple under certain testing conditions.
Description: Paper presented at: SAE 2012 Brake Colloquium & Exhibition - 30th Annual, 2012-09-23, San Diego, California, United States. Copyright © 2012 SAE International. This paper is posted on this site with permission from SAE International, and is for viewing only. Further use or distribution of this paper is not permitted without permission from SAE.
Sponsor: The author would like to acknowledge the support of the Technology Strategy Board in their funding of this research, and the support of Surface Transforms PLC and Federal Mogul Ltd in their support financially and in materials supply.
Version: Accepted for publication
URI: https://dspace.lboro.ac.uk/2134/10058
Publisher Link: http://digitallibrary.sae.org/content/2012-01-1833
Appears in Collections:Conference Papers (Materials)

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