Lubricant Evaluation and Performance 2
Abstract
The development of improved methods is described for defining, measuring and assessing high temperature (500-750 F) lubricants for use in advanced aircraft turbine engines and the development of improved techniques for lubricant monitoring and lubricant condition monitoring for advanced lubricating fluids. Arrhenius plots were developed for describing the effective life of candidate 4 cSt lubricants, polyphenyl ethers and other experimental fluids as it function of time and temperature for selected limiting values of changes in physical and chemical properties. Significant improvement in AE spectrometer sensitivity for analyzing wear metal was made. An in-line magnetic wear monitor was evaluated for possible application as condition monitoring device for oil systems. Fluorescence, UV, dielectric constant, voltammetric and thermal analysis techniques were developed and evaluated as high temperature lubricant monitoring devices. The tribological behavior of high temperature candidate fluids were evaluated and compared in the boundary lubrication regime using sliding four-ball test and various steel and ceramic specimens.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1992
- Accession Number
- ADA247464
Entities
People
- Costandy S. Saba
- D. K. Toth
- H. A. Smith
- M. A. Keller
- R. E. Kauffman
Organizations
- University of Dayton