Crack propagation in a welded polyolefin pipe

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F12%3A00385081" target="_blank" >RIV/68081723:_____/12:00385081 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1108/17579861211235174" target="_blank" >http://dx.doi.org/10.1108/17579861211235174</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1108/17579861211235174" target="_blank" >10.1108/17579861211235174</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Crack propagation in a welded polyolefin pipe

Popis výsledku v původním jazyce

The purpose of this paper is to study the effect of the material inhomogeneity on crack behavior initiated both axially and circumferentially in or near the butt weld and to discuss consequences on residual lifetime of the welded structure. A three-dimensional numerical model of pipe weld with smooth and continuous change of material properties has been used to study the fracture behavior of the cracked pipe structure. The stress intensity factor was considered as a parameter controlling the fracture behavior. The semi-elliptical shape of the crack front was estimated under assumption of constant stress intensity factor along the crack front. According to the results obtained in the paper the following conclusions were deduced. First, the most criticallocation of the crack is in the middle of the inhomogeneous region (weld center) regardless of the crack orientation. The stress intensity factor is substantially higher than in the case of a crack located in the homogenous pipe. Second,

Název v anglickém jazyce

Crack propagation in a welded polyolefin pipe

Popis výsledku anglicky

The purpose of this paper is to study the effect of the material inhomogeneity on crack behavior initiated both axially and circumferentially in or near the butt weld and to discuss consequences on residual lifetime of the welded structure. A three-dimensional numerical model of pipe weld with smooth and continuous change of material properties has been used to study the fracture behavior of the cracked pipe structure. The stress intensity factor was considered as a parameter controlling the fracture behavior. The semi-elliptical shape of the crack front was estimated under assumption of constant stress intensity factor along the crack front. According to the results obtained in the paper the following conclusions were deduced. First, the most criticallocation of the crack is in the middle of the inhomogeneous region (weld center) regardless of the crack orientation. The stress intensity factor is substantially higher than in the case of a crack located in the homogenous pipe. Second,

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

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Projekt

<a href="/cs/project/GC101%2F09%2FJ027" target="_blank" >GC101/09/J027: Souvislost mezi strukturálními změnami, rozvojem poškození a šířením trhlin ve svařovaných polymerních součástech</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

International Journal of Structural Integrity

ISSN

1757-9864

e-ISSN

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Svazek periodika

3

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

148

Kód UT WoS článku

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EID výsledku v databázi Scopus

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