International Scientific Conference BALTTRIB, 2017

OPTIMIZATION OF LITHIUM SOAP-BASED GREASE TESTING METHODOLOGY BASED ON MEASUREMENTS REPEATABILITY

A. V. Radulescu, I. Radulescu
Department of Machine Elements and Tribology, University POLITEHNICA Bucharest, Romania

Abstract

The purpose of the paper is to investigate the rheological properties of a lithium soap-based grease, using a Brookfield viscometer. An optimized methodology was proposed, applicable to the tested grease, which takes into account the possibility of reducing the testing time by analyzing the degree of measurements repeatability. Finally, the thermal variation of the rheological parameters (yield stress and viscosity) was obtained, in the temperature range 10...75 oC. The main result of the paper is the reducing of the testing time from 6 hours to 3 hours for one temperature, with the same precision of measurements, according to economical effects.

 

DOI: https://doi.org/10.15544/balttrib.2017.18

Keyword(s): Rheology, Grease, Thermal.


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