Abstract
Inspection is vital for managing the integrity of offshore structures, allowing for detecting and repairing issues like fatigue cracks to ensure their fitness-for-service. Optimising the scheduling of these inspections, which can be costly, is crucial, making risk-based inspection practices particularly relevant. Practical risk assessments depend on a thorough understanding of operational profiles to predict structural performance accurately. This paper presents an optimisation framework incorporating digital twin technology to enhance monitoring and update fatigue load profiles. Using a probabilistic fracture mechanics model, the framework simulates fatigue crack growth and assesses remaining life through a reliability index. It employs bi-objective optimisation to minimise costs while maximising structural reliability, ultimately determining the optimal inspection plan aided by multi-criteria decision analysis.
| Original language | English |
|---|---|
| Title of host publication | Innovations in the Analysis and Design of Marine Structures |
| Editors | Yordan Garbatov, C. Guedes Soares |
| Publication status | Published - 9 May 2025 |
Keywords
- offshore structures
- risk assessment
- fatigue cracks