Detail publikace
Modeling temperature effects on stress-lifetime fatigue curves in the finite-litetime region
KOHOUT, J. VĚCHET, S.
Anglický název
Modeling temperature effects on stress-lifetime fatigue curves in the finite-litetime region
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
en
Originální abstrakt
Analysing several families of finite-life fatigue curves of various materials obtained at various temperatures, the following general trends have been observed: (i) a decrease in temperature leads to a shift of the curves towards higher strength values, (ii) the slope of the curves at different temperatures is approximately constant, and (iii) if the curves are drawn in log-log scales and absolute Kelvin temperature is ised, the same ratio of temperatures leads approximately to the same shift if fatigue strength values. On the basis of these trends the Basquin equation, which is represented by parallel straight lines in log sigma – lot T fit describing finite-life fatigue curves can be generalized for various temperatures. Deviations from these straight lines are evidence that other degradation mechanisms with different temperature dependences are effective. In the high-temperature region it is most often creep, in the low-temperature region athermal processes of plastic deformation can play a significant role in fatigue failure.
Anglický abstrakt
Analysing several families of finite-life fatigue curves of various materials obtained at various temperatures, the following general trends have been observed: (i) a decrease in temperature leads to a shift of the curves towards higher strength values, (ii) the slope of the curves at different temperatures is approximately constant, and (iii) if the curves are drawn in log-log scales and absolute Kelvin temperature is ised, the same ratio of temperatures leads approximately to the same shift if fatigue strength values. On the basis of these trends the Basquin equation, which is represented by parallel straight lines in log sigma – lot T fit describing finite-life fatigue curves can be generalized for various temperatures. Deviations from these straight lines are evidence that other degradation mechanisms with different temperature dependences are effective. In the high-temperature region it is most often creep, in the low-temperature region athermal processes of plastic deformation can play a significant role in fatigue failure.
Klíčová slova anglicky
fatigue, ADI, modeling temperature
Vydáno
26.03.2007
Nakladatel
Engineering Integrity Society
Místo
Held at Queens College, University of Cambridge, UK, 26. - 28. 3. 2007
ISBN
978-0-9544368-1-0
Kniha
FATIGUE 2007
Strany od–do
42–42
Počet stran
1
BIBTEX
@inproceedings{BUT22154,
author="Jan {Kohout} and Stanislav {Věchet},
title="Modeling temperature effects on stress-lifetime fatigue curves in the finite-litetime region",
booktitle="FATIGUE 2007",
year="2007",
month="March",
pages="42--42",
publisher="Engineering Integrity Society",
address="Held at Queens College, University of Cambridge, UK, 26. - 28. 3. 2007",
isbn="978-0-9544368-1-0"
}