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Statements

Subject Item
n2:RIV%2F68081723%3A_____%2F06%3A00045423%21RIV07-AV0-68081723
rdf:type
skos:Concept n15:Vysledek
dcterms:description
V článku je poukázáno na možnost eliminace závislosti experimentálních dat na geometrii tělesa a diskutována otázka přenositelnosti těchto dat z malých laboratorních vzorků na velká tělesa. Je zdůrazněn význam constraintu pro zvýšení spolehlivosti odhadů životnosti těles s trhlinami. The growth of the fatigue crack is depending on the crack growth resistance of the material as a bulk property. The fatigue crack growth properties of a material are usually described by the correlation between crack propagation rate, and corresponding range of the stress intensity factor (Paris-Erdogan law). Formulated modified Paris-Erdogan law estimate quantitatively the changes of the fatigue crack propagation rate due to different level of constraint. In-plain constraint was described by T-stress value. The validity of the approach suggested has been proved by the comparison of measured and calculated values of the crack propagation rate and it was found that experimental values correspond well with those numerically predicted. The results presented makes it possible to relate experimentally measured data obtained from specimens with different geometries and thus contribute to more reliable estimates of residual fatigue life of structures. The growth of the fatigue crack is depending on the crack growth resistance of the material as a bulk property. The fatigue crack growth properties of a material are usually described by the correlation between crack propagation rate, and corresponding range of the stress intensity factor (Paris-Erdogan law). Formulated modified Paris-Erdogan law estimate quantitatively the changes of the fatigue crack propagation rate due to different level of constraint. In-plain constraint was described by T-stress value. The validity of the approach suggested has been proved by the comparison of measured and calculated values of the crack propagation rate and it was found that experimental values correspond well with those numerically predicted. The results presented makes it possible to relate experimentally measured data obtained from specimens with different geometries and thus contribute to more reliable estimates of residual fatigue life of structures.
dcterms:title
Constraint aspects of the evaluation of fatigue test results in Paris region Vliv constraintu na stanovení únavových charakteristik v Parisově oblasti Constraint aspects of the evaluation of fatigue test results in Paris region
skos:prefLabel
Vliv constraintu na stanovení únavových charakteristik v Parisově oblasti Constraint aspects of the evaluation of fatigue test results in Paris region Constraint aspects of the evaluation of fatigue test results in Paris region
skos:notation
RIV/68081723:_____/06:00045423!RIV07-AV0-68081723
n4:strany
25;28
n4:aktivita
n17:Z n17:P
n4:aktivity
P(GP101/04/P001), P(GP106/06/P239), Z(AV0Z20410507)
n4:cisloPeriodika
4
n4:dodaniDat
n10:2007
n4:domaciTvurceVysledku
n6:1161415 n6:5640423 n6:6154557
n4:druhVysledku
n18:J
n4:duvernostUdaju
n14:S
n4:entitaPredkladatele
n11:predkladatel
n4:idSjednocenehoVysledku
469644
n4:idVysledku
RIV/68081723:_____/06:00045423
n4:jazykVysledku
n9:eng
n4:klicovaSlova
constraint; T-stress; fatigue crack growth
n4:klicoveSlovo
n12:constraint n12:T-stress n12:fatigue%20crack%20growth
n4:kodStatuVydavatele
SK - Slovenská republika
n4:kontrolniKodProRIV
[0EF6FDB66DBF]
n4:nazevZdroje
Komunikácie
n4:obor
n13:JL
n4:pocetDomacichTvurcuVysledku
3
n4:pocetTvurcuVysledku
3
n4:projekt
n16:GP106%2F06%2FP239 n16:GP101%2F04%2FP001
n4:rokUplatneniVysledku
n10:2006
n4:svazekPeriodika
8
n4:tvurceVysledku
Hutař, Pavel Seitl, Stanislav Knésl, Zdeněk
n4:zamer
n8:AV0Z20410507
s:issn
1335-4205
s:numberOfPages
4