On crack propagation in the welded polyolefin pipes with and without the presence of weld beads

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F15%3A00451977" target="_blank" >RIV/68081723:_____/15:00451977 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.matdes.2015.07.131" target="_blank" >http://dx.doi.org/10.1016/j.matdes.2015.07.131</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.matdes.2015.07.131" target="_blank" >10.1016/j.matdes.2015.07.131</a>

Result language
angličtina
Original language name
On crack propagation in the welded polyolefin pipes with and without the presence of weld beads
Original language description
The main aim of the paper is to study the influence of both material inhomogeneity and weld bead geometry on crack propagation in welded polyolefin pipes. Axially and circumferentially oriented cracks are studied and the stress intensity factors are compared considering different positions of the cracks. Two cases of the welded pipe system are compared, one considering the optimal weld bead geometry and the other one considering the geometry after removing the weld bead once the welding process is finished. In both cases the inhomogeneous distribution of material properties inside the welded region is considered. The results show that the weld might have a negative effect on the lifetime especially when the weld bead is removed. Though the weld bead increases the stress concentration near the notches due to which a circumferential crack may appear the resulting lifetime is still comparable to that of an axial crack propagating in a homogeneous pipe.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JL - Fatigue and fracture mechanics
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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