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Title: The effect of tensile properties on the failure behavior of girth welds containing defects and subject to plastic longitudinal strains
Category: Technical papers from the Journal of Pipeline Integrity
Downloadable: Yes 
Project No.:
Research Agency:
Catalog No.: 2035
Date of Publication: Q2 2003
Price: $25.00 US
Authors: Dr Rudi Denys, Prof. Dr Patrick De Baets, Anton A Lefevre and Dr Wim De Waele
Abstract: Girth welds in pipelines subject to longitudinal plastic tensile strains are the most critical regions of the pipeline as whole. As girth welds might contain flaws, it is of paramount interest to develop defect-acceptance criteria for this specific service condition. Predictions based on current fitness-for-purpose methods are impossible, and it is therefore necessary to resort to an alternate solution. The results of large-scale model tests or finite-element analyses can be used to define the plastic deformation behavior of a transversely-loaded girth weld with one or more defects. This paper describes the effect of the interaction between the pipe and the weld metal's post-yield characteristics on the straining capacity of girth welds containing a defect.
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