Lubricant Evaluation and Performance
Abstract
This effort involved the development of improved methods for defining and measuring turbine engine lubricant performance and the development of improved techniques for lubricant monitoring, lubrication system health monitoring, investigating antiwear characteristics and load carrying capacities of lubricants. in Task I, Arrhenius plots were developed for describing the effective life of MIL L 7808, MIL-L-23699 and 4 cSt viscosity candidate lubricants as a function of time and temperature for selected limiting values of changes in physical and chemical properties. In Task II, significant improvement in AE spectrometer sensitivity for analyzing wear metal particles was achieved when using a cup-tip electrode with the reversible polarity pin stand. In Task III, the COBRA, a dielectric constant (DC) tester and a dielectric breakdown strength device were evaluated as lubricant monitoring devices. In Tasks IV and V, an assessment of the literature on lubricant load carrying capacity (LCC) test methods was made. In Task VI, a software system was developed and implemented on the Zenith Z-100 microcomputer for storage, retrieval and correlation of MIL-L-7808 lubricant qualification data. In Task VII, the remaining useful life of a lubricant evaluation rig (RULLER) was developed for MIL-L-7808 and MIL-L-23699 type lubricants and was based on reductive cyclic voltammetry.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1989
- Accession Number
- ADA208925
Entities
People
- Costandy S. Saba
- Hoover A. Smith
- Michael A. Keller
- Robert E. Kauffman
- Vinod K. Jain
Organizations
- University of Dayton