Service Life Assessment of Fatigue Crack Growth for Offshore Jacket Platform

摘要

A new approach is introduced in this paper for assessing the fatigue crackgrowth. Critical crack size is calculated based on the stresses dataextracted from SACS using Paris law under 8 types of random wave load.Failure Assessment Diagram is used to assess the acceptability of crackgrowth during each step. The complete process of calculation iscompacted into a software(JPEFA). A certain case has been performed toprove that the method is valid and effective. Finally the detailed analysison the sensitivity of several important factors are performed.