Article (Scientific journals)
Inspection and maintenance planning for offshore wind structural components: integrating fatigue failure criteria with Bayesian networks and Markov decision processes
Nandar, Hlaing; Morato Dominguez, Pablo Gabriel; Nielsen, Jannie S. et al.
2022In Structure and Infrastructure Engineering - Maintenance
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Keywords :
Offshore wind turbines; inspection and maintenance planning; fracture mechanics; failure criteria; failure assessment diagram; partially observable Markov decision processes
Abstract :
[en] Exposed to the cyclic action of wind and waves, offshore wind structures are subject to fatigue deterioration processes throughout their operational life, therefore constituting a structural failure risk. In order to control the risk of adverse events, physics-based deterioration models, which often contain significant uncertainties, can be updated with information collected from inspections, thus enabling decision-makers to dictate more optimal and informed maintenance interventions. The identified decision rules are, however, influenced by the deterioration model and failure criterion specified in the formulation of the pre-posterior decision-making problem. In this paper, fatigue failure criteria are integrated with Bayesian networks and Markov decision processes. The proposed methodology is implemented in the numerical experiments, specified with various crack growth models and failure criteria, for the optimal management of an offshore wind structural detail under fatigue deterioration. Within the experiments, the crack propagation, structural reliability estimates, and the optimal policies derived through heuristics and partially observable Markov decision processes (POMDPs) are thoroughly analysed, demonstrating the capability of failure assessment diagram to model the structural redundancy in offshore wind substructures, as well as the adaptability of POMDP policies.
Research Center/Unit :
Naval & Offshore Engineering, ArGEnCo, University of Liege, Liege, Belgium
Department of the Built Environment, Aalborg University, Aalborg, Denmark
Department of Naval Architecture, University of Strathclyde, Glasgow, UK
Disciplines :
Civil engineering
Author, co-author :
Nandar, Hlaing  ;  Université de Liège - ULiège > Département ArGEnCo > ANAST (Systèmes de transport et constructions navales)
Morato Dominguez, Pablo Gabriel  ;  Université de Liège - ULiège > Département ArGEnCo > ANAST (Systèmes de transport et constructions navales)
Nielsen, Jannie S. ;  Department of the Built Environment, Aalborg University, Aalborg, Denmark
Amirafshari, Peyman ;  Department of Naval Architecture, University of Strathclyde, Glasgow, UK
Kolios, Athanasios ;  Department of Naval Architecture, University of Strathclyde, Glasgow, UK
Rigo, Philippe  ;  Université de Liège - ULiège > Département ArGEnCo > ANAST (Systèmes de transport et constructions navales)
Language :
English
Title :
Inspection and maintenance planning for offshore wind structural components: integrating fatigue failure criteria with Bayesian networks and Markov decision processes
Publication date :
07 April 2022
Journal title :
Structure and Infrastructure Engineering - Maintenance
ISSN :
1573-2479
eISSN :
1744-8980
Publisher :
Informa UK Limited
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
PhairywinD (https://www.phairywind.be/)
Funders :
Belgian Energy Transition Fund
Available on ORBi :
since 07 April 2022

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