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Effect of welded joint imperfection on the integrity of pipe elbows subjected to internal pressure

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2013
2512.pdf (2.683Mb)
Authors
Dimić, Ivana
Arsić, Miodrag
Međo, Bojan
Stefanović, Ana
Grabulov, Vencislav
Rakin, Marko
article (publishedVersion)
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Abstract
Since local defects reduce the load-carrying capacity and deformation ability of a piping system, an analysis is undertaken to quantify the influence of weld defects on integrity of the pipe elbows subjected to internal pressure. Incompletely filled groove is examined, because this type of defect was previously detected by ultrasonic measurement on the inner surface of the pipeline from a hydro-power plant. Three-dimensional finite element analysis is conducted using Abaqus software package. The influence of weld defect geometry (its depth, length and location) on the elbow integrity is determined. Additionally, decrease of load carrying capacity is determined for the case when a crack has initiated at the bottom of the defect. The influence of finite element type (hexahedral or tetrahedral) is examined.
Keywords:
elbow / finite element method / incompletely filled groove / pipe / structural integrity / welded joint
Source:
Tehnicki vjesnik-Technical Gazette, 2013, 20, 2, 285-290
Publisher:
  • University of Osijek, Tech Fac, Slavonski Brod
Funding / projects:
  • info:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/35002/RS// (RS-35002)
  • info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/174004/RS// (RS-174004)
  • EUREKA E!5348

ISSN: 1330-3651

WoS: 000317728700012

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URI
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2515
Collections
  • Radovi istraživača / Researchers’ publications (TMF)
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Tehnološko-metalurški fakultet

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