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Publications
Jiang, X. and Guedes Soares, C. (2008), “Assessment of the Uncertainty in Corrosion Models for Ship Steels”, Proceedings of the 27th International Conference on Offshore Mechanics and Arctic Engineering (OMAE´08), 15-20 June, 2008, Estoril, Portugal, ASME, New York, Paper OMAE2008-58052.
The corrosion model proposed by Melchers (2003) is compared with the one of Guedes Soares and Garbatov (1999) for a range of parameters that are considered representative of the situations to occur in corrosion of ships and offshore platforms. The differences in the model predictions are represented by a model uncertainty variable and the bias and uncertainty is determined for representative corrosion periods of 7, 15 and 25 years. Is concluded that the average bias is generally within 10% and the standard deviation is of the order of 10% for periods of the order up to 15 years. For shorter durations even better correlations are obtained. For durations of the order of 25 years the mean bias can go up to 20% in limit conditions although in the most common situations it is within 12%.
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