• Le 22 mai 2019
    De 14:00 à 16:30
    Campus Lombarderie
    Amphi Pasteur (bât.2)

L'Université de Nantes accueille le workshop "Monitoring of structures in complex environment: offshore wind turbines" le 22 mai 2019, sur le site de la Faculté des Sciences et des Techniques.

For maximising the energy production and reducing the Levelised Cost Of Energy (LCOE) of offshore wind farms, the optimization of Operation, Maintenance and Service (OMS) costs appears as one of the key solutions to make the sector more competitive in the future. This implies notably a high decrease of the unscheduled maintenance activities, which constitutes around 65% of OMS costs, according to a study conducted by BVGassociates2. Thus, new maintenance strategies and tools should be further developed - such as improved decision making tools for maintenance; as well as the use of Condition Monitoring (CM) and Structural Health Monitoring (SHM) - as part of a Condition-Based maintenance (CBM) strategy. Indeed, a high potential of reduction of the LCOE could be achieved by the introduction of more holistic condition-based maintenance (CBM). This alternative consists in mitigating against major component failure and system breakdown with continuous monitoring, to detect incipient faults early and to determine any necessary maintenance tasks ahead of failure. With an early detection of damage, expensive and unscheduled repairs (i.e. corrective unscheduled maintenance) would be reduced, and the inspection frequency as well (i.e. scheduled maintenance) could be optimized and reduced. The development of CM and SHM systems is a growing sector, which is not used to its full potential. This workshop forms the start of a much larger analysis by addressing the two key issues:
  • monitoring of offshore structures,
  • monitoring of concrete in complex (multi-physic) environment.

Program :

  • 14h00-14h25 : Nuclear concrete structure monitoring: design and qualification procedure
    Lesoille Sylvie - PhD, HDR - R&D Engineer “Monitoring” at ANDRA
     
  • 14h25-14h50 : The importance of automated data interpretation for Structural Health Monitoring - State of the art, tendencies and future perspectives: a focus on (offshore) wind energy
    Kraemer Peter - Prof. Dr.-Ing. - Chair of Mechanics / Structural Health Monitoring (University of Siegen)
     
  • 14h50-15h15 : Research on design and installation of grouted connections
    Schaumann Peter - Prof. Dr.-Ing. - Director of the Institute for Steel Construction (Leibniz University of Hanover)
     
  • 15h15-15h40 : Dialog between in-situ data, physico-statistical modelling and (stochastic-)physical modelling in the monitoring of large concrete structures
    Dufour Frédéric - Prof. - Vice President of the scientific committee for Research (Grenoble INP)
     
  • 15h40-16h20 : Concluding remarks
Ce workshop fait suite à la soutenance de thèse de N. Müller qui aura lieu le matin même : "Optical Fiber Bragg Grating sensors and nonlinear vibration detection method for the structural monitoring of offshore wind turbine grouted connection".