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Failure Pressure Assessment of Subsea Pipelines with Multiple Corrosion Defects under Combined Loadings

AbstractSubsea pipelines operate in harsh marine environments, and corrosion is the major cause threatening their operational safety. In this paper, the failure pressure of pipelines with multiple corrosion defects under combined loadings is investigated. A finite-element model of a pipeline with mu...

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Published in:Journal of pipeline systems 2025-02, Vol.16 (1)
Main Authors: Li, Xinhong, Chi, Shengyou, Han, Ziyue, Chen, Guoming
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Chen, Guoming
description AbstractSubsea pipelines operate in harsh marine environments, and corrosion is the major cause threatening their operational safety. In this paper, the failure pressure of pipelines with multiple corrosion defects under combined loadings is investigated. A finite-element model of a pipeline with multiple corrosion defects is developed, and this model is verified with experiments. The effect of defect depth, axial, and circumferential spacings between corrosion defects on the pipeline’s residual strength is estimated. Furthermore, the failure pressure of a pipeline with multiple corrosion defects under combined loadings, such as internal pressure, axial pressure, and bending moment, is examined. This study aims to support the integrity management of subsea pipelines with multiple corrosion defects.
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source American Society Of Civil Engineers ASCE Journals
subjects Bending moments
Corrosion
Corrosion effects
Corrosion tests
Defects
Deformation
Failure
Finite element method
Internal pressure
Marine environment
Pressure
Residual strength
Sea water corrosion
Submarine pipelines
Technical Papers
Underwater pipelines
Underwater structures
title Failure Pressure Assessment of Subsea Pipelines with Multiple Corrosion Defects under Combined Loadings
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