Investigation of the tribological performance of ionic liquids in non-conformal EHL contacts under electric field activation

Friction

Michal Michalec¹  Petr Svoboda¹  Ivan Krupka¹  Martin Hartl¹  Aleksandar Vencl² 

[1] Faculty of Mechanical Engineering, Brno University of Technology;Faculty of Mechanical Engineering, University of Belgrade;

关键词: friction;    thin film lubrication;    electro-rheological fluid;    smart fluid;    lubrication;   

DOI  :  10.1007/s40544-019-0342-y

来源: DOAJ

【 摘 要 】

Abstract Real-time external alteration of the internal properties of lubricants is highly desirable in all mechanical systems. However, fabricating a suitable and effective smart lubricant is a long-lasting experimental process. In this study, the film thickness and frictional response of ionic liquid-lubricated non-conformal contacts to an electric field excitation under elastohydrodynamic conditions were examined. Film thickness was evaluated using a “ball-on-disc” optical tribometer with an electric circuit. Friction tests were carried on a mini traction machine (MTM) tribometer with a “ball-on-disc” rotation module and an electric circuit for contact area excitation. The results demonstrate that there is a difference in the behaviour of the ionic liquid during electric field excitation at the evaluated film thicknesses. The results of evaluated film thicknesses demonstrate that there is a difference in the behaviour of the ionic liquid during electric field excitation. Therefore, the ionic liquids could be a new basis for the smart lubrication of mechanical components. Moreover, the proposed experimental approach can be used to identify electrosensitive fluids.

【 授权许可】

Unknown