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Statements

Subject Item
n2:RIV%2F68081723%3A_____%2F10%3A00354108%21RIV11-GA0-68081723
rdf:type
n9:Vysledek skos:Concept
dcterms:description
This paper presents the results of notch tests on single edge notch specimen under condition corresponding to the PENT approach, i.e. at temperature 80°C and nominal stress 2,4 MPa. Tests were performed for one monomodal and two bimodal HDPE materials, both from structural and fracture mechanics point of view. The dependence of a crack opening displacement COD vs. time was measured and the values of the rate of the stable crack growth rate da/dt and time to fracture tf were estimated. To estimate the residual life of pipes the finite element model with an initial defect was suggested and the values of the stress intensity factor K have been calculated. The computation took into account the change of the crack shape during its growth in the pipe. For assessment of the residual service life of pipes the relation da/dt = A (K)m was applied. The values of the pipe life-time for three studied materials are compared and diagram of the hoop stress versus failure time is presented. This paper presents the results of notch tests on single edge notch specimen under condition corresponding to the PENT approach, i.e. at temperature 80°C and nominal stress 2,4 MPa. Tests were performed for one monomodal and two bimodal HDPE materials, both from structural and fracture mechanics point of view. The dependence of a crack opening displacement COD vs. time was measured and the values of the rate of the stable crack growth rate da/dt and time to fracture tf were estimated. To estimate the residual life of pipes the finite element model with an initial defect was suggested and the values of the stress intensity factor K have been calculated. The computation took into account the change of the crack shape during its growth in the pipe. For assessment of the residual service life of pipes the relation da/dt = A (K)m was applied. The values of the pipe life-time for three studied materials are compared and diagram of the hoop stress versus failure time is presented.
dcterms:title
Lifetime prediction of HDPE pipes grade Lifetime prediction of HDPE pipes grade
skos:prefLabel
Lifetime prediction of HDPE pipes grade Lifetime prediction of HDPE pipes grade
skos:notation
RIV/68081723:_____/10:00354108!RIV11-GA0-68081723
n3:aktivita
n12:P n12:Z
n3:aktivity
P(GA106/08/1409), P(GA106/09/0279), P(GC101/09/J027), Z(AV0Z20410507)
n3:dodaniDat
n16:2011
n3:domaciTvurceVysledku
n11:6154557 n11:9200002 n11:3875636 n11:1161415
n3:druhVysledku
n4:D
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n20:predkladatel
n3:idSjednocenehoVysledku
268484
n3:idVysledku
RIV/68081723:_____/10:00354108
n3:jazykVysledku
n19:eng
n3:klicovaSlova
HDPE; creep crack; time to rupture curve; PENT test; pipe failure
n3:klicoveSlovo
n7:HDPE n7:PENT%20test n7:creep%20crack n7:pipe%20failure n7:time%20to%20rupture%20curve
n3:kontrolniKodProRIV
[D39597BC347F]
n3:mistoKonaniAkce
Dresden
n3:mistoVydani
Berlin
n3:nazevZdroje
European Conference on Fracture
n3:obor
n13:JL
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
5
n3:projekt
n14:GA106%2F08%2F1409 n14:GA106%2F09%2F0279 n14:GC101%2F09%2FJ027
n3:rokUplatneniVysledku
n16:2010
n3:tvurceVysledku
Nezbedová, E. Knésl, Zdeněk Hutař, Pavel Ševčík, Martin Náhlík, Luboš
n3:typAkce
n17:WRD
n3:zahajeniAkce
2010-08-30+02:00
n3:zamer
n18:AV0Z20410507
s:numberOfPages
9
n10:hasPublisher
Deutscher Verband fur Materialforschung und prufung e.V
n6:isbn
978-3-00-031802-3