Life of Concentrated Contacts in the Mixed EHD and Boundary Film Regimes

Abstract

This analytical and experimental program investigates the influence of surface finish, material and lubricant on rolling contact bearings operating in the low or marginal lubricant film regime. The investigation includes failure analysis of field failures encountered with Helicopter mast support and planetary gear transmission bearings, computer analysis of the above two bearing applications using SKF computer programs SHABERTH and PLANETSYS and testing of specimens made of M50 and 9310 steel using a geared roller tester at NAPC. Keywords: Rolling contact fatigue; Microspalling; Transmission bearings; Mixed EHD film regimes; Surface roughness; Bearing lubricants.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1989
Accession Number
ADA216673

Entities

People

  • John I. Mccool

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Acquisition
  • Aircrafts
  • Data Acquisition
  • Data Processing
  • Electron Microscopy
  • Engineering
  • Failure Analysis
  • Finishes
  • Materials
  • Materials Science
  • Measurement
  • Mechanical Engineering
  • New Jersey
  • Surface Properties
  • Surface Roughness
  • Viscosity Index

Fields of Study

  • Engineering

Readers

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