HYBRID FABRICATION ROUTE - COST EFFICIENT CFRP PRIMARY AIRFRAME STRUCTURES

摘要

The following paper presents a novel manufacturing technology for the fabrication of structures from carbon fiber composite materials. Termed "hybrid fabrication", this technology is based on a combination of the prepreg and the injection technology both of which are already established in industrial production. Numerous experimental studies have been carried out to demonstrate the utility of this procedure for the manufacture of structural parts in aircraft construction. These investigations focussed mainly on the characterization of the contact zone generated through the use of two matrix systems as well as its mechanical properties. Flow experiments with a dye-containing injection resin system and subsequent tests of the mechanical properties of the joined samples have been used to demonstrate that the transition zone of the two matrix materials does not have detrimental effects on the composite in the case of the combination of materials tested. In order to demonstrate the feasibility of manufacture and the expected properties of a durable, hybrid-fabricated structural component, two demonstrators supplementing the proof of suitability are presented.