Influence of different crack propagation rate descriptions on the residual fatigue lifetime of railway axles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F15%3A00449783" target="_blank" >RIV/68081723:_____/15:00449783 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.627.469" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/KEM.627.469</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.627.469" target="_blank" >10.4028/www.scientific.net/KEM.627.469</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of different crack propagation rate descriptions on the residual fatigue lifetime of railway axles

Popis výsledku v původním jazyce

The paper deals with an estimation of the residual fatigue lifetime of the railway axles. The railway axles can include some cracks either from manufacturing process or from previous loading operation. Because of cyclic loading of the railway axles thereis a risk of fatigue failure of the railway axles with unacceptable consequences. Based on this fact, for conservative establishment of the residual fatigue lifetime of the railway axle is necessary to consider an existing crack in the railway axle during design process. The fatigue lifetime estimation of railway axles is very sensitive to used crack propagation rate description (e.g. v-K curve). Typical bending of this curve (knee) can be found in the vicinity of the threshold value in fatigue crack propagation rate dependence (typically v-K curve expressed in log-log coordinates). For accurate estimation of residual fatigue lifetime of the railway axle is necessary to use approximation of v-K curve that takes into account existence o

Název v anglickém jazyce

Influence of different crack propagation rate descriptions on the residual fatigue lifetime of railway axles

Popis výsledku anglicky

The paper deals with an estimation of the residual fatigue lifetime of the railway axles. The railway axles can include some cracks either from manufacturing process or from previous loading operation. Because of cyclic loading of the railway axles thereis a risk of fatigue failure of the railway axles with unacceptable consequences. Based on this fact, for conservative establishment of the residual fatigue lifetime of the railway axle is necessary to consider an existing crack in the railway axle during design process. The fatigue lifetime estimation of railway axles is very sensitive to used crack propagation rate description (e.g. v-K curve). Typical bending of this curve (knee) can be found in the vicinity of the threshold value in fatigue crack propagation rate dependence (typically v-K curve expressed in log-log coordinates). For accurate estimation of residual fatigue lifetime of the railway axle is necessary to use approximation of v-K curve that takes into account existence o

Druh

D - Stať ve sborníku

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

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Projekt

<a href="/cs/project/EE2.3.30.0063" target="_blank" >EE2.3.30.0063: Nadaní postdoktorandi pro vědeckou excelenci v oblasti fyziky materiálů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Advances in Fracture and Damage Mechanics XIII

ISBN

978-3-03835-235-8

ISSN

1013-9826

e-ISSN

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Počet stran výsledku

4

Strana od-do

469-472

Název nakladatele

Trans Tech publications

Místo vydání

Zürich

Místo konání akce

S?o Miguel Island, Azores

Datum konání akce

23. 9. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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