Estimation of rolling friction coefficients in a tribosystem using optical measurements
Abstract
Purpose
This paper aims to present a method to measure the rolling friction coefficient in an easy and fast way. The aim is also to measure the rolling friction coefficient between a small steel ball and a cylindrical aluminum surface.
Design/methodology/approach
An analytical model of the tribosystem of a freely rolling ball and a cylindrical surface is established. The rolling friction coefficient is evaluated from images recorded by a high-speed camera. The coefficient between a 1.58-mm diameter steel ball and a cylindrical aluminum surface is measured. A background subtraction algorithm is used to determine the position of the small steel ball.
Findings
The angular positions of the ball are predicted using the analytical model, and a good agreement is found between the experimental and theoretical results.
Originality/value
An optical method for evaluating the rolling friction coefficient is presented, and the value of this coefficient between a small steel ball and a cylindrical aluminum surface is evaluated.
Keywords
Acknowledgements
Thanks are due to Professor Mikael Sjödahl and Dr Erik Olsson for much useful advice.
Citation
Li, Y., Xi, Y. and Shi, Y. (2018), "Estimation of rolling friction coefficients in a tribosystem using optical measurements", Industrial Lubrication and Tribology, Vol. 70 No. 4, pp. 680-686. https://doi.org/10.1108/ILT-04-2016-0087
Publisher
:Emerald Publishing Limited
Copyright © 2018, Emerald Publishing Limited