Effect of Gas Turbine Engine Lubricant Viscosity on Rolling Contact Fatigue (RCF) Life 962109

The effect of gas turbine engine lubricant viscosity on rolling contact fatigue (RCF) life was studied using four fully formulated synthetic ester based lubricants with the same additive package. The lubricants were evaluated using a modified ball-on-rod type rolling contact fatigue tester for fatigue and wear characteristics, at a maximum hertzian stress of 4.8 GPa and at a speed of 3600 rpm. Weibull analysis and analysis of variance (ANOVA) were performed on the data to determine any significant difference in performance. The lubricant deposits formed at the tribocontact were examined by Auger Electron Spectroscopy (AES). At ambient temperature, viscosity had no effect on both RCF life and wear. However, at 177°C the higher viscosity lubricants formed thicker lubricant film deposits and showed superior fatigue life and reduction in wear rate.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.