Fajri, AprianurAprianurFajriMuhayat, NurulNurulMuhayatAdiputra, RistiyantoRistiyantoAdiputraPrabowo, Aditya RioAditya RioPrabowoGanendra, BenBenGanendraEhlers, SörenSörenEhlersBraun, MoritzMoritzBraun2026-05-152026-05-152025-10VIII International Conference "In-service Damage of Materials: Diagnostics and Prediction” (DMDP 2025)https://hdl.handle.net/11420/63059Catastrophic 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.en2452-321620252330Elsevierhttps://creativecommons.org/licenses/by-nc-nd/4.0/CO2 transport pipelinesdentfatigue analysisfinite element methodgeometric imperfectionTechnology::620: Engineering::620.1: Engineering Mechanics and Materials ScienceConference Paperhttps://doi.org/10.15480/882.1709710.1016/j.prostr.2026.03.00510.15480/882.17097