Publication detail
Low-Temperature and High -Temperature Anomalies in Temperature Shift of Stress - Lifetime Fatigue Curves
KOHOUT, J. VĚCHET, S.
Czech title
Low-Temperature and High -Temperature Anomalies in Temperature Shift of Stress - Lifetime Fatigue Curves
English title
Low-Temperature and High -Temperature Anomalies in Temperature Shift of Stress - Lifetime Fatigue Curves
Type
journal article - other
Language
en
Original abstract
Most families of S-N curves determined at various temperatures present certain general regularities on whose basis the Basquin equation describing finite-life S-N curves can be generalized for various temperatures. This equation can be represented by straight lines with common slope if log-log fit for stress vs. temperature dependence is used. Deviations from these straight lines (anomalies) are evidence that additional degradation mechanisms are effective besides fatigue, whose temperature dependences differ from the mentioned temperature dependence of fatigue strength. In high-temperature region it is most often cyclic creep, in low-temperature region atermal processec of plastic deformation can play significant role in fatigue failure.
Czech abstract
Most families of S-N curves determined at various temperatures present certain general regularities on whose basis the Basquin equation describing finite-life S-N curves can be generalized for various temperatures. This equation can be represented by straight lines with common slope if log-log fit for stress vs. temperature dependence is used. Deviations from these straight lines (anomalies) are evidence that additional degradation mechanisms are effective besides fatigue, whose temperature dependences differ from the mentioned temperature dependence of fatigue strength. In high-temperature region it is most often cyclic creep, in low-temperature region atermal processec of plastic deformation can play significant role in fatigue failure.
English abstract
Most families of S-N curves determined at various temperatures present certain general regularities on whose basis the Basquin equation describing finite-life S-N curves can be generalized for various temperatures. This equation can be represented by straight lines with common slope if log-log fit for stress vs. temperature dependence is used. Deviations from these straight lines (anomalies) are evidence that additional degradation mechanisms are effective besides fatigue, whose temperature dependences differ from the mentioned temperature dependence of fatigue strength. In high-temperature region it is most often cyclic creep, in low-temperature region atermal processec of plastic deformation can play significant role in fatigue failure.
Keywords in Czech
S-N křivky; Nízkoteplotní únava; Vysokoteplotní únava; Creep; Atermální procesy plastické deformace
Keywords in English
S-N curve; Low-temperature fatigue; High-temperature fatigue; Creep; Athermal processes of plastic deformation
RIV year
2008
Released
01.01.2008
Publisher
Trans Tech Publications Ltd
Location
Stafa-Zurich Switzerland
ISSN
0255-5476
Journal
Materials Science Forum
Volume
567-568
Number
5
Pages from–to
113–116
Pages count
4
BIBTEX
@article{BUT48932,
author="Jan {Kohout} and Stanislav {Věchet},
title="Low-Temperature and High -Temperature Anomalies in Temperature Shift of Stress – Lifetime Fatigue Curves",
journal="Materials Science Forum",
year="2008",
volume="567-568",
number="5",
month="January",
pages="113--116",
publisher="Trans Tech Publications Ltd",
address="Stafa-Zurich Switzerland",
issn="0255-5476"
}