Over the past several years, investigations have been carried out into the rate of crack growth in pipeline steels in simulated, near-neutral pH, groundwater environment (NS4 solution). Pre-cracked specimens were subject to constant amplitude loading under various frequencies, maximum loads and R-ratios (minimum/maximum load). Test times varied from about 20 to 400 days. Transgranular crack features, similar to those found in service, have been observed. The extent of crack growth was monitored using either electrical potential drop or detailed metallographic examinations at two laboratories. The resulting crack growth rates from both labs are consistent with a superposition model based on a summation of fatigue (Paris Law) and static (SCC) crack growth rates. Differences between the results at the two laboratories are discussed.
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2000 3rd International Pipeline Conference
October 1–5, 2000
Calgary, Alberta, Canada
Conference Sponsors:
- Pipeline Division
ISBN:
978-0-7918-4025-2
PROCEEDINGS PAPER
Mechanical Factors Affecting Stress Corrosion Crack Growth Rates in Buried Pipelines Free
S. B. Lambert,
S. B. Lambert
University of Waterloo, Waterloo, ON, Canada
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A. Plumtree
A. Plumtree
University of Waterloo, Waterloo, ON, Canada
Search for other works by this author on:
S. B. Lambert
University of Waterloo, Waterloo, ON, Canada
J. A. Beavers
CC Technologies
B. Delanty
TransCanada PipeLines Ltd.
R. Sutherby
TransCanada PipeLines Ltd.
A. Plumtree
University of Waterloo, Waterloo, ON, Canada
Paper No:
IPC2000-219, V002T06A039; 5 pages
Published Online:
October 21, 2016
Citation
Lambert, SB, Beavers, JA, Delanty, B, Sutherby, R, & Plumtree, A. "Mechanical Factors Affecting Stress Corrosion Crack Growth Rates in Buried Pipelines." Proceedings of the 2000 3rd International Pipeline Conference. Volume 2: Integrity and Corrosion; Offshore Issues; Pipeline Automation and Measurement; Rotating Equipment. Calgary, Alberta, Canada. October 1–5, 2000. V002T06A039. ASME. https://doi.org/10.1115/IPC2000-219
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