Mechanical behavior of recycled carbon fiber epoxy and vinylester composites produced by resin infusion with flexible tooling technology (RIFT)

This research aims to define a technological process to design and manufacture high-performance components with innovative composite materials and to assess a line of recycling and recovery of processing waste. The material under study is a felt (non-woven fabric) of short carbon fibres produced by recycling composite material scraps. The activities focus on determining the most suitable production processes and the related process parameters that best lend themselves the uses of recycled carbon felt. Thus, two different laminates were manufactured, adopting epoxy and vinylester resinand the same recycled carbon withthe same stacking sequence. Consequently, the same thickness was obtained,andthe process feasibility and its limits were determined. In addition, the quasi-static and FIMEC tests were conducted to investigate their behaviour under tensile and flexural loading, respectively, and highlight theinfluence of the different matrices used. The results revealed the perfectly elastic behaviour of the material, the strong anisotropy for the epoxy sample and a significant difference in mechanical response in terms of strength and modulus