The MIDIFIC project aims to develop new damping optimization strategies for sustainable lightweight structures made of plant fibers. To achieve this task, a detailed characterization and multiscale modelling of their dynamic properties will be performed. Despite the fact that the loss factor of plant fiber reinforced polymer composites is about one decade higher than in other traditional composites that are based on glass or carbon fibers, their use is still restricted to non-structural applications. To design plant fibers composite structures that combine simultaneously high stiffness and high damping, it is of utmost importance to understand the roles played of each component, in particular that of the fibers and the fiber-matrix interphase in damping performance.
Thus, MIDIFIC proposes to develop and to exploit new experimental methods at the microscale level to achieve breakthrough measurements of the dynamic properties. The physical insights obtained at the microscale will feed multiscale models that can help to predict the dissipative behavior at higher scales. All these tools will be used to gather knowledge and develop innovative methods in the context of structural mechanics. A multiscale optimization will be performed targeting multi-objectives: stiffness, damping, mass and environmental impact.
The project coordinator is Pauline BUTAUD, assistant professor at Supmicrotech, member of the Mat'Eco team in Applied Mechanics Departement of Femto-st intitute.
ANR-22-CE51-0001
