A FUNDAMENTAL STUDY OF ROLLING CONTACT FATIGUE

Abstract

Spheres of Nylon and Teflon material were rolled at constant speed over a (001) surface of carefully prepared crystals of LiF under applied loads ranging from 1 to 400 gms. in the rolling contact apparatus. Under the impact of the applied load, a narrow deformation track, revealed by a high dislocation etch pit density, was left in the wake of the rolling sphere. Within the track, etch pits were clustered in localized areas probably caused by submicroscopic asperities in the surfaces of contact. Orthogonal (110) slip bands were generally observed to be aligned parallel and normal to the rolling direction at moderate stress levels; however, at higher stresses, the two other available slip systems were also observed. The experimental load data are generally in good agreement with theoretical considerations. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1962
Accession Number
AD0285085

Entities

People

  • M.j. Hordon

Tags

DTIC Thesaurus Topics

  • Agreements
  • Dislocations
  • Materials

Readers

  • Materials Science and Engineering.
  • Mathematics or Statistics
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).