Assessment of the Fracture Toughness of Pipeline Girth Welds

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Authors
  1. Gianetto, J.A.
  2. Shen, G.
  3. Tyson, W.R.
  4. Glover, A.G.
Corporate Authors
Materials Technology Lab-CANMET, Ottawa ONT (CAN);Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
The crack-tip-opening displacement (CTOD) fracture toughness and Charpy absorbed energy of the base metal, weld metal and heat-affected zone (HAZ) of a pipeline girth weld were measured for several notch orientations, as well as for simulated HAZ regions produced using a Gleeble 2000 thermal-mechanical simulator. The results show that the CTOD toughness variability can be described by a weakest-link model and Weibull statistics. The present work illustrates how the toughness variability associated with girth welds in pipelines may be quantified for use in engineering critical assessment procedures.
Keywords
Girth welds;CTOD (Crack-tip-opening displacement);Charpy absorbed energy
Report Number
DREA-SR-1999-162-PAP-40 — CONTAINED IN CA000150
Date of publication
01 Oct 1999
Number of Pages
13
DSTKIM No
CA000190
CANDIS No
511914
Format(s):
Hardcopy;Document Image stored on Optical Disk

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