In past work, the authors developed a very useful model for engineering critical assessment (ECA) of pipelines with stress corrosion cracking (SCC). That model uses the effective area method to characterize the crack-depth profile along with flow strength and fracture toughness failure criteria. In the current work, the model was improved in four areas. Tearing instability was added to the fracture toughness failure criteria, formulations for computing values of the J integral for surface cracks were improved, interaction criteria were developed for co-planar flaws, and relationships for estimating values of the strain-hardening exponent were developed. To help validate the improved model, J fracture toughness tests were conducted using compact-tension (CT) specimens, and burst tests were conducted on pipe samples with large flaw length-to-depth ratios.
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2002 4th International Pipeline Conference
September 29–October 3, 2002
Calgary, Alberta, Canada
Conference Sponsors:
- Pipeline Division
ISBN:
0-7918-3620-7
PROCEEDINGS PAPER
Development and Evaluation of Improved Model for Engineering Critical Assessment of Pipelines
J. A. Beavers
J. A. Beavers
CC Technologies, Dublin, OH
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C. E. Jaske
CC Technologies, Dublin, OH
J. A. Beavers
CC Technologies, Dublin, OH
Paper No:
IPC2002-27027, pp. 1459-1466; 8 pages
Published Online:
February 24, 2009
Citation
Jaske, CE, & Beavers, JA. "Development and Evaluation of Improved Model for Engineering Critical Assessment of Pipelines." Proceedings of the 2002 4th International Pipeline Conference. 4th International Pipeline Conference, Parts A and B. Calgary, Alberta, Canada. September 29–October 3, 2002. pp. 1459-1466. ASME. https://doi.org/10.1115/IPC2002-27027
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