Airbus Operations Gmbh

Christian Luebbering

Hauke Lengsfeld

Falk Bajorat

Daniel Hiebing

Ansgar Josef Fennen

Roland Brandenburg

A method for the preparation of a dry textile preform for a large surface area fiber-reinforced composite component, in which resin-free textile material layers for purposes of manufacturing the preform are tensioned in each case in a tensioning frame, and in the stretched state are laid down on a moulding body by means of a linear relative movement between the tensioning frame and the moulding body. Also disclosed is a device for the execution of a method of this type with a tensioning frame for purposes of tensioning the material layers, and with a clamping unit for purposes of fixing the laid-down material layers on a moulding body.

Method and a device for the preparation of a dry textile preform

The present invention provides a method as well as a tool () for producing a T-stringer, in particular in the aircraft and spacecraft sector. The method is characterized by two lay-up strips () being arranged on top of one another, wherein areas () of the lay-up strips () corresponding to the stringer foot () that is to be formed, are spaced apart from one another by means of separation films () and areas () of the lay-up strips () corresponding to a stringer web () come into direct contact with one another, in particular, forming a material bond. In a further method step, the lay-up strips () are clamped at the areas () corresponding to the stringer web () that is to be formed. In an even further step, the areas () corresponding to the stringer foot () that is to be formed are folded open in opposite directions () by means of a folding-open mandrel (), and by means of a pressing roller () the areas () are pressed against corresponding pressing surfaces () of the clamping device () such that the areas () are properly flush. Finally, the folded lay-up strips () are cured to form the T-stringer that is to be produced. The method according to the invention has the advantage over the known method for producing T-stringers that a smaller number of steps is required to produce the T-stringer and can be automated easily.

Method for producing a T-stringer

In a method for reinforcing a fiber composite component for aviation and space flight, a vacuum mat is configured with at least one receiving portion for reproducibly receiving at least one reinforcing element. The at least one reinforcing element is introduced into the at least one receiving portion of the vacuum mat. The vacuum mat with at least one introduced reinforcing element is applied reproducibly in a sealed manner to the fiber composite component to be reinforced to form a mold portion and at least the formed mold portion is cured to connect the at least one reinforcing element to the fiber composite component. The vacuum mat is then removed from the reinforced fiber composite component so that the vacuum mat can be reused.

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Gruenendeich, Germany

Christian Luebbering