ABSTRACT
ABSTRACT Ship structures subjected to repeated sea loadings experience structural deterioration over their lifetime due to fatigue. The estimation of fatigue life is necessary for ensuring the structural safety, and managing the service life of ship structures. However, the accurate fatigue life prediction may be challenging due to the various uncertainties associated with loading and resistance effects. This paper presents the probabilistic optimum service life management of fatigue sensitive ship hull structures considering various sea loading conditions. The effects of the mild, moderate and severe sea loading conditions on (a) the fatigue initiation and propagation, (b) the single-objective and (c) multi-objective optimum service life management under uncertainty are investigated. As a result, the relation among the loading conditions, objective values and inspection times for service life management can be found.
