SANDWICH PANEL WITH INTEGRATED REINFORCING STRUCTURE AND METHOD FOR THE PRODUCTION THEREOF

摘要

A Sandwich panel with a core structure, in particular with a honeycomb-shaped core structure, and plane-parallel cover layers applied to both sides of this core structure, to form a floor surface in a fuselage airframe of an aircraft, the core structure having at least one recess into which at least one reinforcing structure is integrated, wherein the at least one reinforcing structure is formed with at least one core, said core having at least one recess into which a stopper is introduced, into which at least one attachment element can be introduced to attach at least one further component to the sandwich panel, and a plurality of prepreg strips which each have a uniform fibre running direction being wound around the core. In addition, the invention relates to a method for the production of a sandwich panel according to the invention.

主权项

1. A method for the production of a sandwich panel with a core structure, in particular with a honeycomb-shaped core structure which is provided on both sides with plane parallel cover layers, comprising:
introducing at least one recess into the core structure, introducing at least one recess into the at least one core, inserting a stopper into the recess in the core, winding round the core with strips formed using a fibre-reinforced prepreg material to form at least one reinforcing structure, introducing the reinforcing structure at least in certain regions in an interlocking manner into the at least one recess while creating a material bond, applying the cover layers to both sides of the core structure, curing the at least one reinforcing structure and the cover layers by applying pressure and/or temperature, introducing a hole into the at least one stopper at the end of the curing process, into which hole an attachment element can be introduced to attach a further component to the sandwich panel.