Effects of variable loading on residual fatigue life of the railway wheelset

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F14%3A00398726" target="_blank" >RIV/68081723:_____/14:00398726 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.577-578.121" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/KEM.577-578.121</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.577-578.121" target="_blank" >10.4028/www.scientific.net/KEM.577-578.121</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effects of variable loading on residual fatigue life of the railway wheelset

Popis výsledku v původním jazyce

The paper deals with the effects of variable loading on residual fatigue life of the railway wheelset. The railway wheelsets can include some cracks created during manufacturing process or during previous operation. Therefore, it is important to know howthe existing cracks will behave during further service of the train. The experiments show that the fatigue crack growth rate depends not only on size of the load amplitudes in a loading spectrum, but it depends also on the sequence of load amplitudes. Taking into account interaction effects of overloading cycles requires use a method that calculates increments of crack length in each cycle, i.e. cycle-by-cycle. One of such methods represents generalized Willenborg model. This model was used for residual fatigue life time estimations of railway wheelset and results obtained were compared with classical approach, which did not take into account interaction effects. Results obtained can be used for establishing of service intervals of rai

Název v anglickém jazyce

Effects of variable loading on residual fatigue life of the railway wheelset

Popis výsledku anglicky

The paper deals with the effects of variable loading on residual fatigue life of the railway wheelset. The railway wheelsets can include some cracks created during manufacturing process or during previous operation. Therefore, it is important to know howthe existing cracks will behave during further service of the train. The experiments show that the fatigue crack growth rate depends not only on size of the load amplitudes in a loading spectrum, but it depends also on the sequence of load amplitudes. Taking into account interaction effects of overloading cycles requires use a method that calculates increments of crack length in each cycle, i.e. cycle-by-cycle. One of such methods represents generalized Willenborg model. This model was used for residual fatigue life time estimations of railway wheelset and results obtained were compared with classical approach, which did not take into account interaction effects. Results obtained can be used for establishing of service intervals of rai

Druh

D - Stať ve sborníku

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

—

Projekt

<a href="/cs/project/EE2.3.20.0214" target="_blank" >EE2.3.20.0214: Rozvoj lidských zdrojů ve výzkumu fyzikálních a materiálových vlastností modelových, nově vyvíjených a inženýrsky aplikovaných materiálů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

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 XII

ISBN

978-3-03785-830-1

ISSN

1013-9826

e-ISSN

—

Počet stran výsledku

4

Strana od-do

121-124

Název nakladatele

Trans Tech Publications

Místo vydání

Zurich

Místo konání akce

Sardinia

Datum konání akce

17. 9. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000336693900031