Fatigue life as influenced by short periods of overstress TR
Sinclair, G.M.; Dolan, Thomas J.
Loading…
Permalink
https://hdl.handle.net/2142/112617
Description
Title
Fatigue life as influenced by short periods of overstress TR
Author(s)
Sinclair, G.M.
Dolan, Thomas J.
Issue Date
1955-06
Keyword(s)
Fatigue
Stress
Overstress
Abstract
Based, in part, on the results of a previous research report an investigation was made to determine the possible existence of a “delay time” or nucleation period for initiation of fatigue damage in 75S-T6 aluminum alloy. Statistical measurements of the changes in fatigue life caused by periodic cycles of overstress ranging from 10 per cent to as little as 1 per cent of the total life showed no discontinuity in cumulative fatigue damage as a function of the duration of the overstress. It was concluded that the nucleation period for initiation of fatigue damage in this alloy is negligibly small. In addition, calculations based on an expression derived for cumulative fatigue damage indicated that all cracks are not nucleated immediately on the first few loading cycles, but that some nucleation of cracks probably occurs throughout the lifetime of the specimen.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
TAM R 85
1967-0381
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/112617
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
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.
Use this login method if you
don't
have an
@illinois.edu
email address.
(Oops, I do have one)
IDEALS migrated to a new platform on June 23, 2022. If you created
your account prior to this date, you will have to reset your password
using the forgot-password link below.