Accession Number:

AD0285085

Title:

A FUNDAMENTAL STUDY OF ROLLING CONTACT FATIGUE

Descriptive Note:

Corporate Author:

ALLOY ENGINEERING AND CASTING CO CHAMPAIGN ILL

Personal Author(s):

Report Date:

1962-08-01

Pagination or Media Count:

17.0

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

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE