Structural and mechanical defects of materials of offshore and onshore main gas pipelines after long-term operation

Pavlo Maruschak, Sergey Panin, Iryna Danyliuk, Lyubomyr Poberezhnyi, Taras Pyrig, Roman Bishchak, Ilya Vlasov

Division for Materials Science

Research output: Contribution to journal › Article

Abstract

The study has established the main regularities of a fatigue failure of offshore gas steel pipes installed using S-lay and J-lay methods.We have numerically analyzed the influence of preliminary deformation on the fatigue life of 09Mn2Si steel at different amplitudes of cyclic loading. The results have revealed the regularities of formation and development of a fatigue crack in 17Mn1Si steel after 40 years of underground operation. The quantitative analysis describes the regularities of occurrence and growth of fatigue cracks in the presence of a stress concentration.

Original language	English
Pages (from-to)	365-372
Number of pages	8
Journal	Open Engineering
Volume	5
Issue number	1
DOIs	https://doi.org/10.1515/eng-2015-0045
Publication status	Published - 1 Jan 2015

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Keywords

damage
defects of materials
fracture
S-lay and J-lay methods

ASJC Scopus subject areas

Civil and Structural Engineering
Environmental Engineering
Mechanical Engineering
Materials Science(all)
Aerospace Engineering
Electrical and Electronic Engineering

Cite this

Maruschak, P., Panin, S., Danyliuk, I., Poberezhnyi, L., Pyrig, T., Bishchak, R., & Vlasov, I. (2015). Structural and mechanical defects of materials of offshore and onshore main gas pipelines after long-term operation. Open Engineering, 5(1), 365-372. https://doi.org/10.1515/eng-2015-0045

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AU - Pyrig, Taras

AU - Bishchak, Roman

AU - Vlasov, Ilya

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10.1515/eng-2015-0045