AEROSPACE APPLICATION
INFUSION TECHNOLOGY FOR AN AIRCRAFT WING

AeroComposit, JSC (Russia) and partner Solvay (UK)

This technology makes it possible to build integral composite structures with high elongation and a complex aerodynamic form, something that cannot be done with metal.

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The distinguishing feature of this technology is the capability of forming a composite structure from a dry carbon preform laid up by an automated (AFP) machine using carbon-fibre tape.

The process starts with the automated layup of preforms using a 6.35mm-wide dry carbon-fibre tape, resulting in dry carbon workpieces (preforms) with a specified typical form, in particular, skins as well as angled or channel sections. The preforms are then placed into the tooling used for the infusion process, assembled and fixed according to the required design shape.

Vacuum bagging of the tool with the preform ensures a proper manufacturing environment, with the resin supply line connections and the air bleed vents provided by the vacuum bag engineering design. This is followed by forming in an oven at 180°C.

After the resin has hardened and the part is cured, the excess material is trimmed mechanically and the part is prepared for further assembly.