University of Illinois Urbana-Champaign

Highly stressed volume of material as fundamental parameter in fatigue strength of metal members

Kuguel, Roberto

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https://hdl.handle.net/2142/111879

Description

Title
Highly stressed volume of material as fundamental parameter in fatigue strength of metal members
Author(s)
Kuguel, Roberto
Issue Date
1960-06
Keyword(s)
  • Fatigue Strength
  • Metal
  • Stress
Abstract
A study was made of the influence of geometric factors on the fatigue strength of several metals. Size and shape effects as found in existing data on steel and aluminum alloy specimens subjected to different types of loading were reviewed. A simple analysis based on the fact that a decrease of fatigue strength accompanies an increase of volume of material subjected to 95% and more of the maximum stress was found to account for these effects. A linear relationship was found between the logarithm of the maximum stress and the logarithm of the appropriate volume, which was equally valid for both smooth and notch bar members. This line exhibited the same slope for each of the materials that were evaluated. This linear relationship with a ±10 percent scatter band, included 96% of the experimental fatigue strength data. For design purposes, this line may be located using only the fatigue limit determined from small laboratory specimens (0.25 in. in diameter).
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
  • TAM R 169
  • 1967-0465
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/111879
Copyright and License Information
Copyright 1960 Board of Trustees of the University of Illinois

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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.