Development of recyclable Fibre Metal Laminates (FML), their mechanical characterization and FE modelling, aiming at structural application in aeronautics

This study concerns with the optimisation of a fibre-reinforced composite material ply book and application to an aeronautical component. The presented solution is recyclable FML (Fibre Metal Laminate). Recyclable structural PMCs (Polymeric Matrix Composites) developed up-to now in ENEA had be improved satisfy high-demanding fire characteristics requirements aeronautics, particularly for case considered ongoing project FireMat (www.firemat.it), namely turbine-bonnet production. objective combination weight reduction resistance, maximizing use C2C recyclable, secondary biomass derived raw materials. Aluminium layers were introduced inside lamination, act as oxygen barriers improve fire-retardancy. obtained starting from fire-retardant biobased resin, which was associated grade basalt-derived mineral fabric, processed form prepreg then coupled aluminium foils. FE modelling based on performed mechanical characterization single inter- layer adhesive strength stack: sandwich structure (including honeycomb) optimised.