This paper presents results from a case study performed to evaluate the residual capacity of a 6″ flexible pipe when exposed to corrosion damages in the tensile armour. A three-dimensional nonlinear finite element model was developed using the computer code MARC to evaluate the increase in mean and dynamic stresses for a given number of damaged inner tensile armor wires. The study also includes the effect of these damages with respect to the associated stresses in the pressure spiral. Furthermore, the implications of a sequence of wire failures with respect to the accumulated time until cross-section failure in a probabilistic sense are addressed.
Integrity Assessment of Damaged Flexible Pipe Cross-Sections
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Ji, G, Leira, BJ, Sævik, S, Klæbo, F, Axelsson, G, & Fergestad, D. "Integrity Assessment of Damaged Flexible Pipe Cross-Sections." Proceedings of the ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. Volume 6B: Pipeline and Riser Technology. San Francisco, California, USA. June 8–13, 2014. V06BT04A020. ASME. https://doi.org/10.1115/OMAE2014-24155
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