Reliability-based assessment of deteriorating ship structures operating in multiple sea loading climates

Torgeir Moan and Efren Ayala-Uraga

Reliability Engineering and System Safety, 2008, vol. 93, issue 3, 433-446

Abstract: A reliability-based model for assessment of deteriorating ships subjected to multiple environmental conditions is established. Deterioration due to combined crack growth and corrosion in structural components of a ship hull is accounted for based on a fracture mechanics formulation. The model enables to take into account the corrosion-induced increased crack growth rate in two ways: (1) the increased stress range produced by the plate thinning (wastage) effect and (2) corrosion fatigue itself. Sensitivity studies are carried out to evaluate the effect of inspection updating on a production ship subjected to two different climate conditions. The hazard rate concept is adopted as a measure of reliability and emphasized throughout the different case studies.

Keywords: Reliability based; Fatigue; Corrosion; Deteriorating ships; Life extension (search for similar items in EconPapers)
Date: 2008
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Citations: View citations in EconPapers (7)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:93:y:2008:i:3:p:433-446

DOI: 10.1016/j.ress.2006.12.008

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