Time-Variant Reliability Analysis of Ship Structure Subjected to Fatigue and Corrosion

Abstract:

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Based on the characteristics of loading condition of ship structure in service and the degeneration of the strength under fatigue and corrosion, the random time-variant model of ship hull section modulus was set up using the theory of random process. Then the time-variant reliability was analyzed with the method of up-crossing analysis and parallel system reliability. This method could not only present successive decrease of reliability of the ship structure under fatigue and corrosion, but also avoid the complicated numerical integration. It could be seen that this method was easy to achieve. Furthermore, the time-variant reliability was compared with the annual instantaneous reliability through an example, which indicated that this method was more precise, and could provide some references to the decision-making of the reliability, maintenance and safeguard.

Info:

Periodical:

Key Engineering Materials (Volumes 348-349)

Edited by:

J. Alfaiate, M.H. Aliabadi, M. Guagliano and L. Susmel

Pages:

153-156

Citation:

S. Wang et al., "Time-Variant Reliability Analysis of Ship Structure Subjected to Fatigue and Corrosion", Key Engineering Materials, Vols. 348-349, pp. 153-156, 2007

Online since:

September 2007

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Price:

$38.00

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