Evaluation of the EHL Film Thickness and Extreme Pressure Additives on Gear Surface Fatigue Life.

Abstract

Surface pitting fatigue life tests were conducted with seven lubricants, using AISI 9310 spur gears. The test lubricants can be classified as synthetic polyol-esters with various viscosities and additive packages. The lubricant with a viscosity that provided a specific film thickness greater than one and with an additive package produced gear surface fatigue lives that were 8.6 times that for lubricants with a viscosity that provided specific film thickness less than one. Lubricants with the same viscosity and similar additive packages gave equivalent gear surface fatigue lives. (MM)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1994
Accession Number
ADA290506

Entities

People

  • Dennis P. Townsend
  • John Shimski

Organizations

  • Glenn Research Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Additives (Chemicals)
  • Aerial Warfare
  • Air
  • Aircrafts
  • Fatigue Life
  • Fatigue Tests (Mechanics)
  • Friction
  • Lubricant Additives
  • Lubricants
  • Lubrication
  • Materials
  • Surface Roughness
  • Surface Temperature
  • Test And Evaluation
  • Thickness
  • Turbines
  • Viscosity

Fields of Study

  • Engineering

Readers

  • Software Engineering
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).