Abstract

In this study, the corrosion defect width effects on the burst pressure of composite repaired corroded (CRC) pipelines are investigated using extensive parametric elasto-plastic finite element analyses. The finite element model includes constitutive material modelling of both steel and composite and is validated using full-scale burst tests reported in the literature. The parametric analysis considers different values of the defect depths, lengths and widths, and properties of the materials to assess the effect of the defect width as a function of other parameters that affect the burst pressure. The dependency of the critical failure mechanism and burst pressure on the defect shape and size is observed based on the analysis results.

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