Jurišić, Paul and Parunov, Joško (2015) Influence of corrosion-related degradation of mechanical properties of shipbuilding steel on collapse strength of plates and stiffened panels. = Influence of corrosion-related degradation of mechanical properties of shipbuilding steel on collapse strength of plates and stiffened panels. In: 16th International Congress of the International Maritime Association of the Mediterranean IMAM 2015, 21-24.09. 2015., Pula, Hrvatska.
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Abstract
Statistics reveal that corrosion is the main cause of marine casualties in aged ships. Main adverse effect of corrosion is the reduction of the plate thickness leading to simultaneous increase of stresses and decrease of the structural capacity of ship structural components. It was recently found, however, that because of the complex interaction of various mechanical and chemical processes, mechanical properties, such as Young’s modulus of elasticity and yield strength of corroded steel reduces with time. Such long-term degradation of mechanical properties may further reduce structural strength that is not adequately accounted for in ship structural design rules and structural safety analysis procedures. The aim of the present paper is to investigate the consequence of degradation of mechanical properties on collapse strength of plates and stiffened panels. Standard procedures from Common Structural Rules for collapse strength assessment are employed. Corrosion degradation which is required for assessment of loss of mechanical properties is estimated based on real thickness measurements of oil tankers. Conclusions about importance of this phenomenon are drawn.
| Item Type: | Conference or Workshop Item (Lecture) |
|---|---|
| Keywords (Croatian): | corrosion degradation, ship structures, mechanical properties |
| Subjects: | TECHNICAL SCIENCE > Shipbuilding |
| Divisions: | 600 Department of Naval Engineering and Marine Technology > 620 Chair of Marine Structures Design |
| Indexed in Web of Science: | No |
| Indexed in Current Contents: | No |
| Citations SCOPUS: | 2 (06.10.2017.) |
| Date Deposited: | 20 May 2016 13:40 |
| Last Modified: | 06 Oct 2017 11:36 |
| URI: | http://repozitorij.fsb.hr/id/eprint/5856 |
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