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Statements

Subject Item
n2:RIV%2F68081723%3A_____%2F14%3A00398731%21RIV15-AV0-68081723
rdf:type
n8:Vysledek skos:Concept
dcterms:description
The paper deals with the influence of order of cycles in the loading block on the fatigue crack growth rate in railway axle. The railway axle can include some cracks from manufacturing process or initiated fatigue cracks from previous operation. It is advantageous to know how the crack will behave during further service of the train to ensure its safe operation. The most common approaches describing the fatigue crack growth do not take into account the effects of overload cycles, which enlarge the plastic zone ahead of the crack tip. The enlarged plastic zone generates residual compressive stresses, which cause a retardation of the fatigue crack growth. Finite element numerical calculations were used together with the generalized Willenborg model to determine influence of overload cycles on the increment of fatigue crack growing in railway axles. Real geometry of the axle, the crack front shape and typical loading spectrum were taken into account. The paper deals with the influence of order of cycles in the loading block on the fatigue crack growth rate in railway axle. The railway axle can include some cracks from manufacturing process or initiated fatigue cracks from previous operation. It is advantageous to know how the crack will behave during further service of the train to ensure its safe operation. The most common approaches describing the fatigue crack growth do not take into account the effects of overload cycles, which enlarge the plastic zone ahead of the crack tip. The enlarged plastic zone generates residual compressive stresses, which cause a retardation of the fatigue crack growth. Finite element numerical calculations were used together with the generalized Willenborg model to determine influence of overload cycles on the increment of fatigue crack growing in railway axles. Real geometry of the axle, the crack front shape and typical loading spectrum were taken into account.
dcterms:title
Fatigue crack propagation in steels for railway axles Fatigue crack propagation in steels for railway axles
skos:prefLabel
Fatigue crack propagation in steels for railway axles Fatigue crack propagation in steels for railway axles
skos:notation
RIV/68081723:_____/14:00398731!RIV15-AV0-68081723
n3:aktivita
n12:P n12:I
n3:aktivity
I, P(EE2.3.20.0214)
n3:dodaniDat
n11:2015
n3:domaciTvurceVysledku
n13:6154557 n13:3875636 n13:7291973
n3:druhVysledku
n4:D
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n14:predkladatel
n3:idSjednocenehoVysledku
16535
n3:idVysledku
RIV/68081723:_____/14:00398731
n3:jazykVysledku
n7:eng
n3:klicovaSlova
railway axle; crack retardation; variable loading amplitude; generalized Willenborg model
n3:klicoveSlovo
n10:railway%20axle n10:variable%20loading%20amplitude n10:generalized%20Willenborg%20model n10:crack%20retardation
n3:kontrolniKodProRIV
[62988FD59CEE]
n3:mistoKonaniAkce
Brno
n3:mistoVydani
Zurich
n3:nazevZdroje
Materials Structure and Micromechanics of Fracture VII
n3:obor
n19:JL
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
4
n3:projekt
n21:EE2.3.20.0214
n3:rokUplatneniVysledku
n11:2014
n3:tvurceVysledku
Náhlík, Luboš Pokorný, Pavel Matušek, P. Hutař, Pavel
n3:typAkce
n9:WRD
n3:wos
000336694400055
n3:zahajeniAkce
2013-07-01+02:00
s:issn
1013-9826
s:numberOfPages
4
n16:doi
10.4028/www.scientific.net/KEM.592-593.254
n20:hasPublisher
Trans Tech Publications
n5:isbn
978-3-03785-934-6