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Effects of hard particles on friction coefficients and particle embedment in brake system during hard braking

Abdul Hamid, Mohd. Kameil and Stachowiak, G. W. and Samion, Syahrullail (2012) Effects of hard particles on friction coefficients and particle embedment in brake system during hard braking. In: 4Th International Meeting of Advances in Thermofluids (Imat 2011), Pt 1 And 2. American Institute of Physics, Maryland, New York, pp. 905-913. ISBN 978-073541032-9

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Official URL: http://dx.doi.org/10.1063/1.4704303

Abstract

The effects of hard particles on the friction coefficients and particle embedment during hard braking were investigated. Silica sands grit of the size between 180 to 355 µm were used during the experiments. The results were compared to the results obtained without the grit particles present in order to determine the change in friction coefficient, the fluctuation of frictional oscillation amplitude, and the percentage of particle embedment. Different sliding speeds were applied to investigate the relationship between particle embedment with friction coefficient and friction oscillation amplitude. Presence of hard particles of different grit size is found to significantly affect the friction coefficient and standard deviation of friction oscillation amplitude values. The friction coefficient and standard deviation values of friction oscillation amplitude increase with particle embedment due to the rapid changes of the effective contact area and the abrasion mode operating in the gap interface. Also, particle embedment tends to increase the disc surface roughness and influence the stopping time of the disc.

Item Type:Book Section
Additional Information:Indexed by Scopus
Uncontrolled Keywords:abrasive particles, friction coefficients, Hard braking, particle embedment, silica sand
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:35754
Deposited By:INVALID USER
Deposited On:30 Oct 2013 00:29
Last Modified:02 Feb 2017 01:14

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