Application of the Failure Assessment Method for Cracked Pipeline

Abstract:

A new failure assessment curve of pipeline containing crack is provided in this paper. The new failure assessment curve is based on the J integral calculation method of the effective remote stress, and it is as simple as the R6 option 2. The result of the new failure assessment curve is as accurate as the result of the curve based on strict J integral. Moreover, the new failure assessment curve could be used for any stress-strain relationship material, including Ramborg-Osgood (R-O) material and non-R-O materials under monotonic increasing loading, such as long plastic yield plateau steel. The new failure assessment curve is applied to a case that came from the three pipes burst in a proof test of an oil pipeline. Comparison with the result in the proof test shows the result of the new failure curve presented in this paper is accurate.

• Periodical: Advanced Materials Research (Volumes 919-921)
• Pages: 455-459
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.919-921.455
• Online since: April 2014
• Authors: Yong Qiang Bai*, Liang Hai Lv, Tong Wang, Xiao Feng Zhang
• Keywords: Crack, Effective Remote Stress, Failure Assessment Curve, Failure Assessment Diagram, Pipeline

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DOI: 10.1016/0013-7944(84)90096-1

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