ABSTRACT
ABSTRACT Risk-informed life-cycle management has drawn increasing attention for marine infrastructure, including ship and offshore structures. Risk management measures such as repairs are scheduled during the lifetime of ships to keep fatigue and/or corrosion damages below prescribed levels. However, factors affecting the fatigue performance such as operational environment and stress levels are subjected to large uncertainties. These uncertainties complicate the decision making process for risk management. This paper explores the impact of different operation conditions on risk assessment of ships structures under fatigue. An approach is proposed to adapt the life-cycle management plan for future uncertain operational profiles based on regret function. The proposed approach is applied to a fatigue detail of a ship structure.
