The Effect of Aircraft Gas Turbine Engine Lubricants on Rolling/Sliding Contact Fatigue.

Abstract

Contact fatigue testing under conditions of both pure rolling and rolling with sliding were conducted on various lubricants and additives. Principal findings were that: (a) perfluoroalkylpolyethers, C-ethers and a synthetic hydrocarbon traction fluid were all found to improve contact fatigue life over oils conforming to the MIL-L-23699B specification (i.e. polyol esters); (b) a phosphorous salt high gear loading additive was found to be detrimental to fatigue life; (c) micropitting is a precursor to fatigue spalling when sliding is present; (d) fatigue life decreases dramatically with increasing sliding velocity and increases with increasing rolling velocity, and (e) additives are most effective when sliding is present.

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1976
Accession Number
ADA028295

Entities

People

  • R. Valori

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Additives (Chemicals)
  • Fatigue Life
  • Gas Turbines
  • Lubricants
  • Sliding
  • Sliding Contacts
  • Turbine Components
  • Turbines

Fields of Study

  • Materials science

Readers

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