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Title:Factors influencing fretting fatigue strength TR
Author(s):Corten, H.T.; Dolan, Thomas J.
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.
Issue Date:1955-06
Publisher:Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report:TAM R 88
Genre:Technical Report
Sponsor:Office of Naval Research, Department of the Navy, Contract No. N6ori-071(04), Project NR-031-005
Rights Information:Copyright 1955 Board of Trustees of the University of Illinois
Date Available in IDEALS:2021-11-04

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  • Technical Reports - Theoretical and Applied Mechanics (TAM)
    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.

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