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Effect of geometric imperfections on CO₂ transport pipelines under fatigue loading
Citation Link: https://doi.org/10.15480/882.17097
Publikationstyp
Conference Paper
Date Issued
2025-10
Sprache
English
TORE-DOI
Journal
Volume
81
Start Page
23
End Page
30
Citation
VIII International Conference "In-service Damage of Materials: Diagnostics and Prediction” (DMDP 2025)
Contribution to Conference
Publisher DOI
Scopus ID
Publisher
Elsevier
Catastrophic failures of CO₂ transport pipelines can result in severe economic losses and even casualties. During operation, pipelines are subjected to cyclic loading, which may lead to fatigue failure. The presence of geometric imperfections (GI) arising from installation processes introduces uncertainty that can affect the pipe’s strength under these conditions. This study assesses the impact of dent-type GI on the fatigue resistance of CO₂ transport pipelines using a validated finite element method (FEM). Fatigue analysis was conducted using the hot-spot stress approach on the straight tubular pipe with dent-type GI ranging from 0% to 20%. The pipe material is ASTM A36 steel, and the boundary conditions represent an onshore buried pipeline. The results show that the higher the percentage of dent-type GI, the lower the fatigue life due to the stress concentration effect. Further experimental tests and fluid–structure interaction studies are recommended to extend these findings.
Subjects
CO2 transport pipelines
dent
fatigue analysis
finite element method
geometric imperfection
DDC Class
620.1: Engineering Mechanics and Materials Science
Publication version
publishedVersion
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1-s2.0-S2452321626001769-main.pdf
Type
Main Article
Size
1.88 MB
Format
Adobe PDF