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Reliability Assessment of Corroding Ship Hull Structure

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An approach for reliability assessment of the ultimate strength of a ship hull structure in the presence of corrosion is developed. Corrosion growth is modeled as a time dependent random function that decreases the thickness of ship hull structural members with time. The second order reliability method (SORM) is used to calculate instantaneous reliability of the primary hull structure. The methodology for computing the time dependent reliability of a corroding ship structure is developed. Sensitivity of the time dependent reliability of the structure to statistical and probabilistic description of the corrosion growth parameters is investigated. An example problem involving a corroding tanker structure is used for demonstration.
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Document Type: Research Article

Publication date: October 1, 2003

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  • The Naval Engineers Journal is the peer-reviewed journal of the American Society of Naval Engineers (ASNE). ASNE is the leading professional engineering society for engineers, scientists and allied professionals who conceive, design, develop, test, construct, outfit, operate and maintain complex naval and maritime ships, submarines and aircraft and their associated systems and subsystems.
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