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- W3212701972 abstract "• This paper numerically dealt with the residual ultimate strength of offshore pipeline with uniform pitting corrosion under external pressure. • Effects of pit depth, the degree of pit corrosion intensity, the relative pitting affect zone, relative metal loss, pitting distribution were discussed. • Based on the degree of pit corrosion intensity, the relative pitting affect zone and relative metal loss were suggested to provide some insights for assessing the residual ultimate strength of offshore pipeline. Pitting corrosion is frequently existed in offshore pipelines adversely influencing the ultimate strength. This paper dealt with the residual ultimate strength of the pipelines with uniform pitting corrosion under external pressure using nonlinear finite element method. Influences of the degree of pit corrosion intensity, relative pitting depth, the length of corrosion region and pitting distribution were analyzed. It was concluded that the degree of pit corrosion intensity relative pitting depth have significant effects on the ultimate strength and they can be attributed to the relative metal loss, whereas the influence of corrosion length is relatively small. Further more, it was also concluded that the random distribution can be simplified to uniform distribution with the same DOP and metal loss Based on the numerical investigation, a mathematical formulation was proposed for predicting the residual ultimate strength of the pipeline." @default.
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- W3212701972 date "2021-12-01" @default.
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- W3212701972 title "Residual ultimate strength investigation of offshore pipeline with pitting corrosion" @default.
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- W3212701972 doi "https://doi.org/10.1016/j.apor.2021.102869" @default.
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