Point-based POMDP risk based inspection of offshore wind substructures
Morato, P.G.; Mai, Q.A.; Rigo, P.; Nielsen, J.S. (2019). Point-based POMDP risk based inspection of offshore wind substructures, in: Caspeele, R. et al.Life cycle analysis and assessment in civil engineering: towards an integrated vision.
Proceedings of the sixth International Symposium on Life-Cycle Civil Engineering (IALCCE 2018), 28-31 October 2018, Ghent, Belgium. pp. 3069-3076
In: Caspeele, R.; Taerwe, L.; Frangopol, D.M. (Ed.) (2019). Life cycle analysis and assessment in civil engineering: towards an integrated vision.
Proceedings of the sixth International Symposium on Life-Cycle Civil Engineering (IALCCE 2018), 28-31 October 2018, Ghent, Belgium. Taylor & Francis Group: London. ISBN 9781138626331. 564 pp., more
This article presents a novel methodology to select the optimal maintenance strategy of an offshore wind structural component, providing a flexible and reliable support to decision-making and balancing inspection, repair and failure costs. The procedure to create a "Point-Based" Partially Observable Markov Decision Process (POMDP) is described and a calibrated fracture mechanics model is introduced to assess the deterioration of the structure. The methodology is then tested for a tubular joint through a 60-states POMDP, obtaining the optimal maintenance policy in low computational time and in good agreement with common Risk-Based Inspection (RBI) methods.
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