Laser pattern-induced unidirectional lubricant flow for lubrication track replenishment
作者机构：School of Mechanical and Automotive EngineeringQingdao University of TechnologyQingdao 266520China Department of Mechanical EngineeringCity University of Hong KongHong KongChina
出 版 物：《Friction》 (摩擦（英文版）)
年 卷 期：2022年第10卷第8期
页 面：1234-1244页
核心收录：
学科分类：08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程]
基 金：The authors would like to express their gratitude to the National Natural Science Foundation of China(No.51775286) the Research Grants Council of Hong Kong(Project No.CityU11269216)for the financial support
主 题：laser surface texture limited lubricant supply comb-tooth-shaped pattern lubricant replenishment friction coefficient
摘 要：Effective oil replenishment to the lubrication track of a running bearing is crucial to its sustainable *** practical solutions are rare despite numerous theoretical studies were conducted in the last few *** paper proposes the use of surface effect,wettability gradient,to achieve the *** method is simple and can be nicely implemented using femtosecond laser ablation.A periodic comb-tooth-shaped pattern with anisotropic wetting capability is devised and its effect on the anisotropic spreading behaviour of an oil droplet is *** show that the comb-tooth-shaped pattern enables the rearrangement of oil distribution,thereby escalating oil replenishment to the lubrication *** effect is due to the unbalanced interfacial force created by the surface *** influence of the shape and the pitch of teeth,which are the two governing factors,on oil transport is also *** effects of the newly devised surface pattern on lubrication are experimentally evaluated under the conditions of limited lubricant *** results are promising,demonstrating the reduction in bearing friction and the increase in lubricating film thickness.
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