Service life of corrosion pitted pipes subject to fatigue loading and hydrogen embrittlement

Ali Rajabipour, Robert E. Melchers

Research output: Contribution to journalArticle

Abstract

The structural service life of brittle material pipes with exterior corrosion pits is likely to depend on crack initiation and crack development and this may be influenced by pressure loading fluctuations and the possibility of material hydrogen embrittlement. Recently developed methods are used to estimate the cracking pattern, the failure state of the crack development from external pits and the rate of Hydrogen-Assisted Cracking under fluctuating loadings. The effect of hydrogen from the surrounding environment on the cracking rate is formulated using a generalized form of Paris' law. The depth of cracks initiated from surface pits is estimated as a function of pipe age. A realistic example is presented and the results discussed.

Original languageEnglish
Pages (from-to)8440-8450
Number of pages11
JournalInternational Journal of Hydrogen Energy
Volume43
Issue number17
DOIs
Publication statusPublished - 26 Apr 2018
Externally publishedYes

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