Detail publikace
Shift of S-N curves of ferritic nodular cast iron due to loading cycle asymmetry
KOHOUT, J. VĚCHET, S.
Český název
Shift of S-N curves of ferritic nodular cast iron due to loading cycle asymmetry
Anglický název
Shift of S-N curves of ferritic nodular cast iron due to loading cycle asymmetry
Typ
článek v časopise - ostatní, Jost
Jazyk
en
Originální abstrakt
Increasing the mean stress of loading cycle causes a shift of fatigue (Wöhler s or S-N) curves towards higher values of fatigue strength if the curves are represented by the upper stress of loading cycle in dependence on the number of cycles to fracture. A successful quantitative description of the shift in gigh-cycle region was published by Walker. The aim of the present paper consists in deriving relations that describe the shift of fatigue curves in the whole cycle region from UTS to permanent fatigue limit. Their applicability is demonstrated by successful fit of the family of tfatigue curves loading cycle asymetries when the curves are described by the Stromeyer qquation as well as by the Kohout and Vechet qquation. Also the limitation of Walker s approach in the case of high mean stresses is discussed and a certain solution is proposed.
Český abstrakt
Increasing the mean stress of loading cycle causes a shift of fatigue (Wöhler s or S-N) curves towards higher values of fatigue strength if the curves are represented by the upper stress of loading cycle in dependence on the number of cycles to fracture. A successful quantitative description of the shift in gigh-cycle region was published by Walker. The aim of the present paper consists in deriving relations that describe the shift of fatigue curves in the whole cycle region from UTS to permanent fatigue limit. Their applicability is demonstrated by successful fit of the family of tfatigue curves loading cycle asymetries when the curves are described by the Stromeyer qquation as well as by the Kohout and Vechet qquation. Also the limitation of Walker s approach in the case of high mean stresses is discussed and a certain solution is proposed.
Anglický abstrakt
Increasing the mean stress of loading cycle causes a shift of fatigue (Wöhler s or S-N) curves towards higher values of fatigue strength if the curves are represented by the upper stress of loading cycle in dependence on the number of cycles to fracture. A successful quantitative description of the shift in gigh-cycle region was published by Walker. The aim of the present paper consists in deriving relations that describe the shift of fatigue curves in the whole cycle region from UTS to permanent fatigue limit. Their applicability is demonstrated by successful fit of the family of tfatigue curves loading cycle asymetries when the curves are described by the Stromeyer qquation as well as by the Kohout and Vechet qquation. Also the limitation of Walker s approach in the case of high mean stresses is discussed and a certain solution is proposed.
Klíčová slova česky
materiálové vědy; feritická tvárná litina; únavové chování; S-N křivky
Klíčová slova anglicky
materials science; ferritic nodular cast iron; fatigue behavior; S-N curve
Rok RIV
2008
Vydáno
22.03.2008
Nakladatel
KING FAGD UNIVERSITY OF TETROLEUM AND MINERALS, DGAGRAN 31261, SAUDI ARABIA
Místo
Dahran, Saudi Arabia
ISSN
1319-8025
Časopis
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
Ročník
33
Číslo
1B
Strany od–do
213–222
Počet stran
10
BIBTEX
@article{BUT48603,
author="Jan {Kohout} and Stanislav {Věchet},
title="Shift of S-N curves of ferritic nodular cast iron due to loading cycle asymmetry",
journal="ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING",
year="2008",
volume="33",
number="1B",
month="March",
pages="213--222",
publisher="KING FAGD UNIVERSITY OF TETROLEUM AND MINERALS, DGAGRAN 31261, SAUDI ARABIA",
address="Dahran, Saudi Arabia",
issn="1319-8025"
}