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http://dx.doi.org/10.9725/kstle.2004.20.5.225

Study of the Friction Force Measurements According to the Rolling-Sliding Ratios under the Condition of Elastohydrodynamic Lubrication  

장시열 (국민대학교 기계자동차공학부)
Publication Information
Tribology and Lubricants / v.20, no.5, 2004 , pp. 225-230 More about this Journal
Abstract
Most studies of elsatohydrodynamic lubrication are oriented only to the measurement of film thickness itself with optical interferometer. In order to exactly investigate the tribological characteristics of a certain lubricant, it is also important to get the information of traction behaviors as well. In this work, we developed a device for measuring the friction force of ehl contact condition as well as the film thickness. To verify the validity of the measuring system, the friction forces and film thicknesses under ehl condition are simultaneously measured with the variations of additive ratios of viscosity index improvers which cause non-linear tendencies of film thickness to contact velocity.
Keywords
elastohydrodynamic lubrication(ehl); friction force; film thickness; non-Newtonian fluid;
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