@article{ZHANG2016, 
author = {Yaoguang ZHANG and Wenzhong WANG and Shengguang ZHANG and Ziqiang ZHAO},
title = {Optical analysis of ball-on-ring mode test rig for oil film thickness measurement},
year = {2016},
journal = {Friction},
volume = {4},
number = {4},
pages = {324-334},
keywords = {film thickness measurement, optical interference, optical matrix, rolling bearing, high speed},
url = {https://www.sciopen.com/article/10.1007/s40544-016-0127-5},
doi = {10.1007/s40544-016-0127-5},
abstract = {There are few experimental results available on film thickness at speeds above 5 m/s and they are almost all based on the optical ball-on-disc test rig. In contrast to the contacts in a rolling bearing, in which the lubricant in the oil reservoir distributes symmetrically, ball-on-disc contact shows asymmetry of lubricant distribution due to centrifugal effects. In order to closely imitate the contact occurring between the ball and the outer ring of a ball bearing, this study proposes an experimental model based on ball-on-glass ring contact. An optical matrix method is used to analyze the optical system, which is composed of a steel ball-lubricant-chromium-coated glass ring. Based on the optical analysis, the measurement system is improved in order to obtain a high quality interference image, which makes it possible to measure the film thickness at high-speeds conditions.}
}