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Accession Number:
ADA247464
Title:
Lubricant Evaluation and Performance 2
Descriptive Note:
Interim rept. Jul 1988-Dec 1990,
Corporate Author:
DAYTON UNIV OH RESEARCH INST
Report Date:
1992-01-01
Pagination or Media Count:
575.0
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.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE
