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Statements

Subject Item
n2:RIV%2F68081723%3A_____%2F11%3A00353503%21RIV11-GA0-68081723
rdf:type
skos:Concept n7:Vysledek
dcterms:description
In the case of large diameter polyethylene (PE) and polypropylene (PP) pipes the most usual joint is the butt weld. This paper focuses on the influence of a weld bead on the service life of welded pipes from a fracture mechanics perspective. To this aim the stress concentrator created by the connection between the weld bead and the pipe’s free surface is modelled as a notch. Global parameters defining properties of stress and strain field in the notch region are calculated for materials with a prevailing Norton-type creep. It is demonstrated that in the case of creep loading conditions and ductile failure mode the existence of such stress concentrators has no negative influence on the lifetime of pipes. In the case of large diameter polyethylene (PE) and polypropylene (PP) pipes the most usual joint is the butt weld. This paper focuses on the influence of a weld bead on the service life of welded pipes from a fracture mechanics perspective. To this aim the stress concentrator created by the connection between the weld bead and the pipe’s free surface is modelled as a notch. Global parameters defining properties of stress and strain field in the notch region are calculated for materials with a prevailing Norton-type creep. It is demonstrated that in the case of creep loading conditions and ductile failure mode the existence of such stress concentrators has no negative influence on the lifetime of pipes.
dcterms:title
The Effect of Polymer Pipe Weld Geometry on Creep Lifetime The Effect of Polymer Pipe Weld Geometry on Creep Lifetime
skos:prefLabel
The Effect of Polymer Pipe Weld Geometry on Creep Lifetime The Effect of Polymer Pipe Weld Geometry on Creep Lifetime
skos:notation
RIV/68081723:_____/11:00353503!RIV11-GA0-68081723
n7:predkladatel
n8:ico%3A68081723
n3:aktivita
n15:Z n15:S n15:P
n3:aktivity
P(GC101/09/J027), S, Z(AV0Z20410507)
n3:cisloPeriodika
-
n3:dodaniDat
n9:2011
n3:domaciTvurceVysledku
n10:9200002 n10:1161415 n10:3875636 n10:6154557
n3:druhVysledku
n18:J
n3:duvernostUdaju
n16:S
n3:entitaPredkladatele
n19:predkladatel
n3:idSjednocenehoVysledku
196408
n3:idVysledku
RIV/68081723:_____/11:00353503
n3:jazykVysledku
n5:eng
n3:klicovaSlova
creep; stress concentration factor; lifetime; triaxiality
n3:klicoveSlovo
n14:lifetime n14:creep n14:stress%20concentration%20factor n14:triaxiality
n3:kodStatuVydavatele
CH - Švýcarská konfederace
n3:kontrolniKodProRIV
[D9417A9D4E5C]
n3:nazevZdroje
Key Engineering Materials
n3:obor
n17:JL
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
4
n3:projekt
n12:GC101%2F09%2FJ027
n3:rokUplatneniVysledku
n9:2011
n3:svazekPeriodika
465
n3:tvurceVysledku
Ševčík, Martin Knésl, Zdeněk Hutař, Pavel Náhlík, Luboš
n3:zamer
n13:AV0Z20410507
s:issn
1013-9826
s:numberOfPages
4