Publications

Guedes Soares, C., Garbatov, Y. and Zayed, A. (2011), “Effect of environmental factors on steel plate corrosion under marine immersion conditions”, Corrosion Engineering Science and Technology, Vol 46, Nº. 4, pp. 524-541

This study considers different environmental factors affecting corrosion under marine immersion conditions and proposes a mathematical model incorporating their effects on corrosion degradation through the ship life. The study adopts a nonlinear function of time as the reference corrosion model calibrated at long term average conditions to represent the corrosion behavior under standard environmental conditions. Based on previous experimental and empirical field data a correction factor is proposed to model the effect of each environmental factor. These multiplicative factors correct the standard prediction of corrosion degradation to obtain a short term estimate under any specific condition. Then, a long term estimate of corrosion degradation is assessed by summing the short term corrosion estimates during the various discrete time periods in which the ship life can be decomposed. A numerical example of a representative application of the new corrosion model is presented, to demonstrate how to apply the model.

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