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Simulating the service life performance of an inspected group of jacket-type structures

  • A novel method for risk-based optimization of inspection and repair strategies for deteriorating structural systems has recently been proposed. The method defines heuristics at the system level to reduce the number of possible strategies. For each defined strategy, it computes the updated system failure probability conditional on simulated inspection and repair histories, and evaluates the associated costs and risk. The expected total service life costs and risk for a strategy are finally determined using Monte Carlo simulation. The optimal strategy minimizes the expected total service life costs and risk. We intend to adopt this approach to optimize inspection, monitoring and repair activities for offshore wind park support structures. As a first step, we simulate – in analogy to an offshore wind park – the service life performance of an inspected group of jacket-type frames. The performance is quantified in terms of the group’s system failure probability conditional on simulatedA novel method for risk-based optimization of inspection and repair strategies for deteriorating structural systems has recently been proposed. The method defines heuristics at the system level to reduce the number of possible strategies. For each defined strategy, it computes the updated system failure probability conditional on simulated inspection and repair histories, and evaluates the associated costs and risk. The expected total service life costs and risk for a strategy are finally determined using Monte Carlo simulation. The optimal strategy minimizes the expected total service life costs and risk. We intend to adopt this approach to optimize inspection, monitoring and repair activities for offshore wind park support structures. As a first step, we simulate – in analogy to an offshore wind park – the service life performance of an inspected group of jacket-type frames. The performance is quantified in terms of the group’s system failure probability conditional on simulated inspection and repair histories. The underlying system model accounts for the structural redundancy of the frames and the interdependence among their failure events due to similar loading conditions. The model also captures stochastic dependence among the deterioration states of the frames. As part of the simulation process the a-priori unknown outcome of any planned inspection is generated conditional on the outcome of all previous inspections.zeige mehrzeige weniger

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Autor*innen:Ronald SchneiderORCiD, Sebastian ThönsORCiD, Andreas Rogge
Persönliche Herausgeber*innen:Christian Bucher, Bruce R. Ellingwood, Dan M. Frangopol
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Proceedings of the 12th International Conference on Structural Safety and Reliability
Jahr der Erstveröffentlichung:2017
Verlag:TU-MV Media Verlag GmbH
Verlagsort:Vienna, Austria
Erste Seite:2738
Letzte Seite:2747
Freie Schlagwörter:Fatigue; Inspection; Inspection planning; Reliability; Service life performance
Veranstaltung:12th International Conference on Structural Safety and Reliability
Veranstaltungsort:Vienna, Austria
Beginndatum der Veranstaltung:06.08.2017
Enddatum der Veranstaltung:10.08.2017
ISBN:978-3-903024-28-1
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:15.08.2017
Referierte Publikation:Nein
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