Estimation of rolling friction coefficients in a tribosystem using optical measurements. Issue 4 (8th May 2018)

• Record Type: Journal Article
• Authors: Li, Yiling; Xi, Yinhu; Shi, Yijun
• Is Part Of: Industrial lubrication and tribology. Volume 70:Issue 4(2018)
• Page Start: 680
• Page End: 686
• Publication Date: 2018-05-08
• Subjects: Optical measurement -- High-speed camera -- Rolling friction coefficient -- Rolling friction torque; Lubrication and lubricants -- Periodicals; Tribology -- Periodicals; 621.89
• DOI: 10.1108/ILT-04-2016-0087
• Languages: English
• ISSNs: 0036-8792

Abstract

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.