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

Research output: Contribution to journalArticle

7 Citations (Scopus)


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 languageEnglish
Pages (from-to)365-372
Number of pages8
JournalOpen Engineering
Issue number1
Publication statusPublished - 1 Jan 2015



  • 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

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