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Publications
Bhardwaj, U., Teixeira, A.P. and Guedes Soares, C. (2021), “Burst strength assessment of X100 to X120 ultra-high strength corroded pipes”, Ocean Engineering, Vol. 241, 110004.
This paper addresses analytically and numerically the burst strength of ultra-high strength steel pipelines with corrosion defects based on their elastic-plastic collapse behaviour. First, a model that properly accounts for the strain hardening behaviour of this category of pipelines is derived. An appropriate theoretical model with strain hardening based on the von Mises yield criterion is chosen and verified by finite element analyses and burst test data for intact ultra-high-grade steel pipelines. An extensive series of finite element analyses are then conducted to derive a scheme for assessing the effect of corrosion defects on the burst strength of such pipelines. Three sets of new burst strength models are proposed for ultra-high strength corroded pipes based on a parametric study of finite element analyses and intact pipe failure criteria. Subsequently, the proposed models’ validity and versatility are discussed by comparing with various other relevant models and burst test data specific to this class of steel pipes. The results indicate that the proposed models are adequate for burst strength prediction of ultra-high strength pipes with corrosion defects.
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