Ingenieur Vol 80 ingenieur 2019 octoberfinal | Page 29

Prepreg materials are widely used in composites in aero-structure manufacturing. They have made a large impact in numerous industries requiring application- specific, advanced composites. The aerospace industry benefits greatly from numerous prepreg characteristics. With the development of advanc e d pre - impreg nation pro c e s s e s , manufacturers can develop a wide range of aircraft components such as aircraft flooring, interiors, cargo liners, fuselage, wing structures and much more. As Boeing and Airbus continue experimenting with prepreg materials, we will begin to see prepregs being utilised in many more aerospace applications. Research is also ongoing to improve composites’ repair methodology, recyclability and bonding techniques between fibres and matrices. Moreover, standards are being set up for testing and computerisation of mechanical and corrosion properties. Since the development of new fire-retarding elements and the availability of polymers with higher temperature ratings, there is easier fabrication and lower cost. MMC and CMC parts indicate that important progress is being made in the reduction of processing and manufacturing costs. It is important to realise that the development of composites requires an integrated approach between user and designer/manufacturer to ensure functionality. New generation large aircraft are designed with all-composite fuselage, wing structures, and engines; the material can be found in other components, such as helicopter blades, too. Thus, we can say that composite materials are becoming even more important in the construction of aerospace structures. 27