University of Illinois Urbana-Champaign

Factors influencing fretting fatigue strength TR

Corten, H.T.; Dolan, Thomas J.

Permalink

https://hdl.handle.net/2142/112650

Description

Title
Factors influencing fretting fatigue strength TR
Author(s)
  • Corten, H.T.
  • Dolan, Thomas J.
Issue Date
1955-06
Keyword(s)
  • Fretting
  • Fatigue
Abstract
The influence of clamping pressure on the fretting fatigue strength of 24S-T aluminum alloy was investigated. The strength was reduced to approximately 50 per cent of the unfretted fatigue strength due to clamping between aluminum clamping pads at a nominal pressure of 4000 psi. Higher clamping pressures, however, produced only a small additional reduction of strength. The influence of dissimilar clamping pad materials, including aluminum, brass, soft and hard steel, on the fretting endurance limit of hard steel was investigated. The strength of the hard steel specimens, due to fretting against aluminum, soft steel, brass, and hard steel clamping pads, was reduced to 91 per cent, 81 per cent, 59 per cent, and 50 per cent, respectively, of the unfretted endurance limit. A microhardness study indicated that the hardness of the steel specimen surface was (a) increased due to fretting against aluminum pads, (b) unchanged due to fretting against either soft or hard steel pads and, (c) decreased due to fretting against brass pads. These results are discussed in terms of the behavior of asperities (microscopic high points) subjected to normal and shear forces and the influence of thin oxide layers.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
  • TAM R 88
  • 1967-0384
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/112650
Sponsor(s)/Grant Number(s)
Office of Naval Research, Department of the Navy, Contract No. N6ori-071(04), Project NR-031-005
Copyright and License Information
Copyright 1955 Board of Trustees of the University of Illinois

Owning Collections

Technical Reports - Theoretical and Applied Mechanics (TAM) PRIMARY
TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.