University of Illinois Urbana-Champaign

Effect of temperature on cycle dependent deformation

Gain, Brian R.

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https://hdl.handle.net/2142/111993

Description

Title
Effect of temperature on cycle dependent deformation
Author(s)
Gain, Brian R.
Issue Date
1964-12
Keyword(s)
  • Temperature
  • Deformation
Abstract
The effect of temperature on a number of phenomena associated with cycle dependent deformation was studied in the temperature range 77.4°K to 295°K. Experiments were performed on annealed OFHC copper under conditions of a static tensile stress plus a superposed fully reversed cyclic shear strain. The chief consideration was the effect of temperature on the minimum cyclic creep rate. Also studied was the effect of temperature on transient cyclic creep, a relationship between minimum cyclic creep rate and fatigue life, and a relationship between plastic hysteresis energy and fatigue life. On the basis of experimental results it has been shown that a variation in temperature has a significant effect on the minimum cyclic creep rate in the low temperature region. The shape of the total deformation curve for cyclic creep is qualitatively similar to a creep curve of ordinary time and temperature dependent creep. The transient cyclic creep was similar to ordinary transient creep, but since temperature affected the relation for transient cyclic creep, it was concluded that there was at least one difference between cyclic and ordinary transient creep. It was also shown that a variation in temperature has an effect on a relation between total plastic hysteresis energy to failure and fatigue life, but has no observable effect on an empirical relation between minimum cyclic creep rate and fatigue life.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
  • TAM R 273
  • 1967-0568
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/111993
Sponsor(s)/Grant Number(s)
Air Force Materials Laboratory, Wright-Patterson Air Force Base, Contract No. AF 33(657)-10822
Copyright and License Information
Copyright 1964 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.