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Photo Credit: Fraunhofer IPT
Materials for aircraft must be highly resilient and at the same time as light as possible. Offering both, carbon fiber-reinforced plastics (CFRP) have been used more and more frequently in aeroengine fan blades. (See “Rolls-Royce starts manufacture of world’s largest fan blades”). However, production of these components is very time-consuming and expensive because they have to cure for several hours in the autoclave. A research team from the Fraunhofer Institute for Production Technology (IPT, Aachen, Germany) is seeking to automate the production of CFRP fan blades even further.
The production of many CFRP components is already partially automated. Pre-impregnated semi-finished prepregs typically made from fiber-reinforced epoxy resin are applied and oriented in thin layers to create a tailored layup. This is then cured under pressure and heat in an energy-, cost- and time-intensive autoclave process. Fraunhofer IPT has been resear