Life expectancy assessment of marine structures

✍ Scribed by Bilal M. Ayyub; Gregory J. White

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 892 KB
• Volume: 3
• Category: Article
• ISSN: 0951-8339
• DOI: 10.1016/0951-8339(90)90014-i

✦ Synopsis

In this paper, a methodology of structural life assessment is suggested. The methodology is based on probabilistic analysis, using reliability concepts and the statistics of extremes. The methodology results in the probability of failure of a structural system according to the identified failure modes as a function of time, i.e. structural life. The results can be interpreted as the cumulative probability distribution function (CDF) of structural life. Due to the unknown level of statistical correlation between the safety margins of components of the system, limits or bounds on the CDF of the structural life can be established. The limits correspond to the extreme cases offully correlated and uncorrelated safety margins. The effect of inspection strategies on structural life is discussed. An example illustrating the use of the methodology is presented.