计量学报2026，Vol.47Issue(4)：502-508,7.DOI:10.3969/j.issn.1000-1158.2026.04.04
滚动工况点接触边界润滑油膜厚度的接触电阻法测量技术研究
Research on Measurement Technique for Lubricating Oil Film Thickness at Point Contact under Boundary Lubrication Conditions during Rolling Using Contact Resistance Method
摘要
Abstract
A precision rolling test module based on a ball-on-disk tribometer was developed to measure oil film thickness under boundary lubrication using the contact resistance method.The theoretical relationship between contact resistance and film thickness for point contact was derived from electrical contact and tribological theories,and its applicability under dynamic rolling conditions was experimentally validated.After calibrating the contact resistance under dry rolling to eliminate systematic errors,rolling lubrication tests were conducted under various loads and speeds to obtain dynamic contact resistance.The measured contact resistance was below 10 kΩ in boundary and mixed lubrication regimes,with a repeatability of 84 Ω.Oil film thickness was simultaneously measured using the optical interference method with a resolution of 0.8 nm.By correlating contact resistance with film thickness under identical operating conditions,a dynamic contact resistance-film thickness model for point-contact rolling under medium loads was established,achieving a goodness of fit of 0.96.The results demonstrate the feasibility of applying the contact resistance method to practical point-contact rolling lubrication conditions.关键词
几何量测量/油膜厚度/边界润滑/点接触/滚动工况/动态接触电阻-膜厚模型Key words
geometric measurement/boundary lubrication/point contact/rolling conditions/dynamic contact resistance-oil film thickness model分类
通用工业技术引用本文复制引用
杨家慧,黄鹭,孙淼,赵平坦,贾鑫,蔡晋辉,叶放..滚动工况点接触边界润滑油膜厚度的接触电阻法测量技术研究[J].计量学报,2026,47(4):502-508,7.基金项目
国家自然科学基金(52575247,52402062) （52575247,52402062）
国家市场监督管理总局科技计划(2023MK181) （2023MK181）
中国计量科学研究院基本科研业务费(AKYZD2203) （AKYZD2203）
