Behavior of Corroded Aboveground Pipes Subjected to Internal Pressure

Abstract

Corrosion is accountable for numerous malfunctions and leakages in gas pipelines. In instances of external corrosion, due to the internal pressure within the pipes, stress concentrations can occur around the corroded areas. These, in the presence of cavities or cracks resulting from corrosion, may amplify the risk of pipeline failure. Consequently, as the wall thickness diminishes due to corrosion, the pipeline’s ability to withstand internal pressure declines. In the case of corrosion, the pressure at which a corroded pipe might collapse is significantly lower than that of an uncorroded one. Finite element modeling of corroded pipes with a defect is conducted using the Abaqus software, taking into account the mechanical effects of internal pressure on the gas pipeline structure. Abaqus facilitates the simulation of internal pressure and predicts the behavior of the pipe under pressure conditions.