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Founding Member
Location: France, Britany, Brest
Work: composite materials, dynamic behavior, mechanics, renewable marine energy,
Biographical: RESEARCH SCIENTIST - PROFESSOR MECHANICS OF NAVAL AND OFFSHORE STRUCTURES LABORATORY ENSTA BRETAGNE, BREST, FRANCE. MAIN RESEARCH TOPICS Naval and Offshore structures - composite materials - mechanical behaviour - static and dynamic response - finite element analysis - residual strength - damage modelling - fracture behaviour - interlaminar fracture toughness - correlation of structure & properties, computer modelling and data bases - Renewable Marine Energies. AREAS OF EXPERTISE Composite materials, Mechanical behavior, Finite Element Analysis, Impact and Dynamic Response, Adhesively bonded joints: Application for Naval and Offshore structures and Renewable Marine Energies. My research activities articulate around the development of experimental, theoretical and numerical approaches for a better description of the elastic behaviour of damaged composite material under dynamic loading in terms of dynamic response and damage kinetic. The hot line of this work is the comprehension of the appearance and the evolution of damage. This comprehension aims to better describing, simulating and optimizing the macroscopic behaviour of composite materials by multi scales approaches and by integrating certain aspects of their microstructure. For this objective, my research tasks are undertaken by developing two complementary approaches jointly: the experimental investigation and multi scales modelling of the mechanical behaviour. These two approaches were enriched by a third orientation. This one relates to the numerical developments of algorithms aiming at implementing the behaviour laws in structures computer codes by using finite elements method. These laws are developed for the modelling of the dynamic response, the produced damage and residual strength and/or are identified directly through experimental and numerical procedures. The development of the experimental approach enabled me to set up, to validate and exploit original experimental methodologies for the follow-up and the identification of damage processes. Several techniques are used to examine the extent of damage. First, during the dynamic compression, High-speed photography and infrared camera are used to follow the samples history. Impacted samples were inspected by optical techniques and fluorescent dye was applied to improve damage visualization. The damage can also be located by the analysis of the dynamic curves. The synergy of these experimental techniques contributed to finely identify the microscopic mechanisms of progressive degradation and to determine their kinetics of evolution in the static and dynamic case. Currently, these experimental techniques are supplemented by the exploitation of thermal field’s measurements methods by infrared camera. Those contribute to determine the sources of intrinsic dissipation in dynamics through the establishment of the thermodynamic assessment. They make it possible to support the bases of multi scales modelling of damaged thermo-mechanical behaviour.
Work: composite materials, dynamic behavior, mechanics, renewable marine energy,
Biographical: RESEARCH SCIENTIST - PROFESSOR MECHANICS OF NAVAL AND OFFSHORE STRUCTURES LABORATORY ENSTA BRETAGNE, BREST, FRANCE. MAIN RESEARCH TOPICS Naval and Offshore structures - composite materials - mechanical behaviour - static and dynamic response - finite element analysis - residual strength - damage modelling - fracture behaviour - interlaminar fracture toughness - correlation of structure & properties, computer modelling and data bases - Renewable Marine Energies. AREAS OF EXPERTISE Composite materials, Mechanical behavior, Finite Element Analysis, Impact and Dynamic Response, Adhesively bonded joints: Application for Naval and Offshore structures and Renewable Marine Energies. My research activities articulate around the development of experimental, theoretical and numerical approaches for a better description of the elastic behaviour of damaged composite material under dynamic loading in terms of dynamic response and damage kinetic. The hot line of this work is the comprehension of the appearance and the evolution of damage. This comprehension aims to better describing, simulating and optimizing the macroscopic behaviour of composite materials by multi scales approaches and by integrating certain aspects of their microstructure. For this objective, my research tasks are undertaken by developing two complementary approaches jointly: the experimental investigation and multi scales modelling of the mechanical behaviour. These two approaches were enriched by a third orientation. This one relates to the numerical developments of algorithms aiming at implementing the behaviour laws in structures computer codes by using finite elements method. These laws are developed for the modelling of the dynamic response, the produced damage and residual strength and/or are identified directly through experimental and numerical procedures. The development of the experimental approach enabled me to set up, to validate and exploit original experimental methodologies for the follow-up and the identification of damage processes. Several techniques are used to examine the extent of damage. First, during the dynamic compression, High-speed photography and infrared camera are used to follow the samples history. Impacted samples were inspected by optical techniques and fluorescent dye was applied to improve damage visualization. The damage can also be located by the analysis of the dynamic curves. The synergy of these experimental techniques contributed to finely identify the microscopic mechanisms of progressive degradation and to determine their kinetics of evolution in the static and dynamic case. Currently, these experimental techniques are supplemented by the exploitation of thermal field’s measurements methods by infrared camera. Those contribute to determine the sources of intrinsic dissipation in dynamics through the establishment of the thermodynamic assessment. They make it possible to support the bases of multi scales modelling of damaged thermo-mechanical behaviour.