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http://dx.doi.org/10.12989/sem.2016.59.5.795

Impact of geometric pattern corrosion on limit failure pressure of buried gas pipelines  

Hassani, Nemat (Department of Civil Engineering, Shahid Beheshti University)
Kolbadi, S. Mohammad S. (Department of Civil Engineering, Shahid Beheshti University)
Shiravand, Mahmud Reza (Department of Civil Engineering, Shahid Beheshti University)
Golafshani, Jafar H. (Department of Civil Engineering, Shahid Beheshti University)
Publication Information
Structural Engineering and Mechanics / v.59, no.5, 2016 , pp. 795-802 More about this Journal
Abstract
Gas pipelines are types of structures that are highly susceptible to corrosion. Sometimes, the pipes are subjected to a thinning of the wall thickness at the inside or outside wall due to erosion/corrosion. Therefore, it is important to evaluate the strength of the pipes undergoing corrosion to maintain the integrity of the piping systems. The main purpose of this study is to understand failure aspects caused by degradation of metal due to corrosion through. The ASME standard offers a relationship for the yielding pressure of the corroded pipes which was compared with the finite element results. The results demonstrate to obtain accurate results, the ASME relationship is unreliable. Moreover, pitting corrosion must be considered critical more than of other types.
Keywords
gas pipeline; limit failure pressure; geometric pattern corrosion; ASME code;
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