- Author : National Aeronautics and Space Administration (NASA)
- Publisher : Createspace Independent Publishing Platform
- Release : 2018-06-24
- ISBN : 9781721809363
- Pages : 26 pages
An Experimental Investigation of the Influence of the Lubricant Viscosity and Additives on Gear Wear
Download or read book An Experimental Investigation of the Influence of the Lubricant Viscosity and Additives on Gear Wear written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-24 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: The influence of lubricant viscosity and additives on the average wear rate of spur gear pairs was investigated experimentally. The gear specimens of a comprehensive gear durability test program that made use of seven lubricants covering a range of viscosities were examined to measure gear tooth wear. The measured wear was related to the as-manufactured surface roughness, the elastohydrodynamic film thickness, and the experimentally determined contact fatigue lives of the same specimens. In general, the wear rate was found to be inversely proportional to the viscosity of the lubricant and to the lambda ratio (also sometimes called the specific film thickness). The data also show an exponential trend between the average wear rates and the surface fatigue lives. Lubricants with similar viscosities but differing additives and compositions had somewhat differing gear surface fatigue lives and wear rates. Krantz, Timothy L. and Kahraman, Ahmet Glenn Research Center NASA/TM-2005-213956, ARL-TR-3126, E-15272