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Boutros El Hajj, Bruno Castanier, Franck Schoefs and Emilio Bastidas-Arteaga
The objective of this paper is to propose tools for the lifecycle management of infrastructure by showing the slow degradation processes for which inspection data are accessible, especially the data obtained from non-destructive testing (NDT) and structu...
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Franck Schoefs, Mestapha Oumouni, Morteza Ahmadivala, Neil Luxcey, Florian Dupriez-Robin and Patrick Guerin
Offshore wind is planned to become the first source of energy by 2050. That requires installing turbines in deeper seas. It is shown that only floating wind turbines will allow dealing with this challenge while keeping a reasonable cost of energy product...
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Franck Schoefs, Arash Bakhtiari and Hamed Ameryoun
Novel attempts to optimize the design and requalification of offshore structures draws attention to the importance of updating information about the environmental forces. One of the important steps to design or re-assess offshore structures is the re-eva...
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Antoine Marty, Franck Schoefs, Thomas Soulard, Christian Berhault, Jean-Valery Facq, Benoît Gaurier and Gregory Germain
After a few weeks, underwater components of offshore structures are colonized by marine species and after few years this marine growth can be significant. It has been shown that it affects the hydrodynamic loading of cylinder components such as legs and ...
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Franck Schoefs, Michael O?Byrne, Vikram Pakrashi, Bidisha Ghosh, Mestapha Oumouni, Thomas Soulard and Marine Reynaud
Hard marine growth is an important process that affects the design and maintenance of floating offshore wind turbines. A key parameter of hard biofouling is roughness since it considerably changes the level of drag forces. Assessment of roughness from on...
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Michael O?Byrne, Bidisha Ghosh, Franck Schoefs and Vikram Pakrashi
This paper investigates the role that virtual environments can play in assisting engineers and divers when performing subsea inspections. We outline the current state of research and technology that is relevant to the development of effective virtual env...
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Benjamin Decurey, Franck Schoefs, Anne-Laure Barillé and Thomas Soulard
Bio-colonisation affects the ageing of materials and the behaviour of offshore structures. Mooring systems and umbilicals belong to the family of slender bodies which are components sensitive to bio-colonisation because of a change of dynamic behaviour d...
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Hamed Ameryoun, Franck Schoefs, Laurent Barillé and Yoann Thomas
The present paper deals with the stochastic modeling of bio-colonization for the computation of stochastic hydrodynamic loading on jacket-type offshore structures. It relies on a multidisciplinary study gathering biological and physical research fields t...
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Yann Lecieux, Emmanuel Rozière, Virginie Gaillard, Cyril Lupi, Dominique Leduc, Johann Priou, Romain Guyard, Mathilde Chevreuil and Franck Schoefs
This paper presents the Structural Health Monitoring (SHM) system developed for a port wharf of a freight terminal, in Saint-Nazaire, France. This concrete structure has been equipped with a multi-sensor system for the monitoring of concrete ageing. The ...
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Michael O?Byrne, Vikram Pakrashi, Franck Schoefs and Bidisha Ghosh
Recent breakthroughs in the computer vision community have led to the emergence of efficient deep learning techniques for end-to-end segmentation of natural scenes. Underwater imaging stands to gain from these advances, however, deep learning methods req...
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