In the present study, lubricating grease was developed with paraffin oil and 12-lithium hydroxy stearate metal soap as a thickening agent. MoS2 nanosheets were synthesized by hydrothermal method and functionalized with 1-octadecanethiol (i.e., MoS2-ODT). The MoS2 and MoS2-ODT nanosheets were dispersed in the grease with different concentrations to evaluate its tribological performance. Tribological results unveiled …
Misalignment between the shaft and the bearing of a journal bearing set may be inevitable and can negatively impact journal bearing performance metrics in many industrial applications. This work proposes a convex profile design of the journal surface to help counteract the negative effects caused by such a misalignment. A transient mass-conserving hydrodynamic Reynolds equation …
Most of us working in the lubricating grease industry know the NLGI mantra by now: A lubricating grease is a solid to semi-fluid dispersion of a thickening agent (thickener) in a liquid. This is directly from the NLGI website glossary. But what does this mean? Let’s start at the end of the definition and work …
Tribology was formalized by the Jost report. The Jost report formally a report on “Lubrication (Tribology) Education and Research” organized and presented to the UK government 9 March 1966 by Dr. Peter H. Jost. This paper coins the term Tribology and quantifies the saving that can happen when using sound tribological concepts. That is by …
This paper presents a thermal elastohydrodynamic lubrication (EHL) model for analyzing crowned roller lubrication performances under the influence of frictional heating. In this thermal EHL model, the Reynolds equation is solved to obtain the film thickness and pressure results while the energy equation and temperature integration equation are evaluated for the temperature rise in the …
This workshop will provide a basic understanding of the principles of Tribology. Tribology is the study of friction and wear with and without the presence of a lubricant. Although friction and wear are aspects of all industrial mechanical components it is not specifically part of science and engineering curricula. This program will last two and a …
