Lecture Fantuzzi - Crack Paths 2024

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Structural integrity in marine environment for the decarbonisation of the offshore sector
Nicholas Fantuzzi, University of Bologna, Italy
Paulo Mendes, University of Porto, Portugal
José A.F.O. Correia, University of Porto, Portugal
Lance Manuel, University of Texas at Austin, USA

The transition towards decarbonisation in the offshore sector requires a robust understanding of structural integrity in the demanding marine environment. This presentation delves into key challenges and methodologies pertinent to this pursuit.
Fatigue design challenges associated with transition pieces from decommissioned platforms for offshore wind energy are explored, highlighting the need for innovative solutions. Furthermore, fatigue damage assessment of jacket-type platforms is discussed, incorporating global approaches and stochastic analysis utilizing wave spectra to enhance accuracy. In particular, stress concentration factor analysis and fatigue life evaluation in offshore tubular KT-joints are discussed, shedding light on critical considerations for structural integrity in marine environments.
Additionally, the utilization of digital twin technology for the decommissioning of offshore platforms as wind turbine supports is examined, presenting a pathway towards sustainable reuse. This is achieved by a global fatigue assessment framework for decommissioned jacket platforms, aiming at their effective repurposing as offshore wind turbine installations.
Through these insights, this research contributes to the advancement of decarbonisation efforts in the offshore sector while ensuring the longevity and safety of offshore structures.

This work is a result of Agenda “NEXUS: Innovation Pact Digital and Green Transition – Transports, Logistics and Mobility”, nr. C645112083-00000059, investment project nr. 53, financed by the Recovery and Resilience Plan (PRR) and by European Union - NextGeneration EU. This research was also supported and funded by the base funding - UIDB/04708/2020 and programmatic funding - UIDP/04708/2020 of the CONSTRUCT - Instituto de I&D em Estruturas e Construções - funded by national funds through the FCT/MCTES (PIDDAC). Additionally, this research work was also supported by the Portuguese funds through the FCT/MCTES (PIDDAC), under the MIT Portugal Program under the project MIT-EXPL/SOE/0054/2021.

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