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Statements

Subject Item
n2:RIV%2F68081723%3A_____%2F14%3A00398726%21RIV15-AV0-68081723
rdf:type
skos:Concept n14:Vysledek
dcterms:description
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 how the 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 railway wheelsets. 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 how the 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 railway wheelsets.
dcterms:title
Effects of variable loading on residual fatigue life of the railway wheelset Effects of variable loading on residual fatigue life of the railway wheelset
skos:prefLabel
Effects of variable loading on residual fatigue life of the railway wheelset Effects of variable loading on residual fatigue life of the railway wheelset
skos:notation
RIV/68081723:_____/14:00398726!RIV15-AV0-68081723
n3:aktivita
n21:P n21:I
n3:aktivity
I, P(EE2.3.20.0214)
n3:dodaniDat
n16:2015
n3:domaciTvurceVysledku
n7:7291973 n7:3875636 n7:6154557 n7:9200002
n3:druhVysledku
n20:D
n3:duvernostUdaju
n4:S
n3:entitaPredkladatele
n9:predkladatel
n3:idSjednocenehoVysledku
13798
n3:idVysledku
RIV/68081723:_____/14:00398726
n3:jazykVysledku
n17:eng
n3:klicovaSlova
variable amplitude loading; residual fatigue life; generalized Willenborg model; fatigue crack; railway wheelset
n3:klicoveSlovo
n6:generalized%20Willenborg%20model n6:fatigue%20crack n6:railway%20wheelset n6:variable%20amplitude%20loading n6:residual%20fatigue%20life
n3:kontrolniKodProRIV
[58590FA591EF]
n3:mistoKonaniAkce
Sardinia
n3:mistoVydani
Zurich
n3:nazevZdroje
Advances in Fracture and Damage Mechanics XII
n3:obor
n13:JL
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
4
n3:projekt
n10:EE2.3.20.0214
n3:rokUplatneniVysledku
n16:2014
n3:tvurceVysledku
Náhlík, Luboš Hutař, Pavel Ševčík, Martin Pokorný, Pavel
n3:typAkce
n18:WRD
n3:wos
000336693900031
n3:zahajeniAkce
2013-09-17+02:00
s:issn
1013-9826
s:numberOfPages
4
n8:doi
10.4028/www.scientific.net/KEM.577-578.121
n12:hasPublisher
Trans Tech Publications
n15:isbn
978-3-03785-830-1