FIBER COMPOSITE COMPONENT ASSEMBLY HAVING AT LEAST TWO PLATE-SHAPED COMPOSITE STRUCTURES AND PROCESSES FOR PREPARING SAME

Abstract

A method for producing a fiber composite component assembly having at least first and second plate-shaped composite structures made from synthetic resin embedded fibers, the at least first and second fiber composite components having a plurality of partial regions not containing synthetic resin is described. The method includes positioning the at least first and second fiber composite components, the partial regions having been brought to flush conformity with each other, bonding the at least first and second positioned fiber composite components by the adhesive layer arranged in between, placing mechanical reinforcement means through the partial regions, infusing the dry partial regions with synthetic resin, and curing the synthetic resin placed in the partial regions.

Claims

1. A method for producing a fiber composite component assembly having at least first and second plate-shaped composite structures made from synthetic resin embedded fibers, the at least first and second fiber composite components having a plurality of partial regions not containing synthetic resin, the method comprising: positioning the at least first and second fiber composite components, the partial regions having been brought to flush conformity with each other, bonding the at least first and second positioned fiber composite components by the adhesive layer arranged in between, placing mechanical reinforcement means through the partial regions, infusing the dry partial regions with synthetic resin, and curing the synthetic resin placed in the partial regions.

2. The method of claim 1, wherein the partial regions, which in the initial state are dry, are produced by inserting a filler during the production of the fiber composite components from fibers and synthetic resin.

3. The method of claim 1, wherein each partial region not containing synthetic resin is at least largely to fully enclosed by a cured region of the fiber composite component.

4. The method of claim 1, wherein the partial region is essentially rectangular or oval to round in shape.

5. The method of claim 1, wherein the mechanical reinforcement means are configured as pins to form a pin connection.

6. The method of claim 1, wherein the mechanical reinforcement means are configured as threads to form a sewn connection.

7. The method of claim 1, wherein the partial regions are arranged in series with an edge spacing and a web spacing.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Further measures that improve the invention are shown in further detail below, together with the description of a preferred exemplary embodiment, with reference to the figures.

[0021] The following are shown:

[0022] FIG. 1 a perspective diagrammatic view of two fiber composite components to be interconnected, and

[0023] FIG. 2 a cross section of the interconnected fiber composite components for producing a fiber composite component assembly.

DETAILED DESCRIPTION

[0024] According to FIG. 1 two plate-shaped composite components 1 and 2 of an aircraft structure (not shown in detail) in the edge region comprise several partial regions 3a or 3b which can be brought to flush conformity with each other and which are arranged so as to be spaced apart from each other. While the fiber composite components 1 and 2 outside these partial regions 3a and 3b are cured, only fibers 4 without a plastic matrix extend through the partial regions 3a and 3b.

[0025] This forms a prerequisite for the two plate-shaped fiber composite components 1 and 2 to be interconnected during installation, by way of additional mechanical reinforcement means in the form of pins 5, in addition to bonding. In this embodiment each partial region 3a, 3b that does not contain synthetic resin is completely enclosed by a cured region of the fiber composite component 1 or 2, thus in each case forming an essentially rectangular region. The partial regions 3a and 3b that do not contain synthetic resin are in each case arranged in series to each other with an edge spacing a and a web spacing b.

[0026] According to FIG. 2 the two plate-shaped fiber composite components 1 and 2 are joined in the form of an overlap connection. Primarily, the two fiber composite components are integrally interconnected by way of an adhesive layer 6 arranged in-between. The adhesive layer 6 acts between the respectively cured regions of the fiber composite components 1 and 2 that are arranged around the partial regions 3a and 3b that do not contain synthetic resin. The cured regions of the fiber composite components 1 and 2 comprise fibers embedded in synthetic resin 7, in the present embodiment carbon fibers, and consequently the fiber composite components 1 and 2 are carbon-fiber reinforced composite components.

[0027] In the embodiment of the fiber composite component assembly shown, the partial regions 3a and 3b that do not contain synthetic resin are designed by way of mechanical reinforcement means in the form of threads 8 to form a sewn connection.

[0028] For producing the fiber composite component assembly the two fiber composite components 1 and 2 are first positioned relative to each other in that the partial regions 3a and 3b that do not contain synthetic resin, which regions have respectively been placed therein, are brought to flush conformity with each other. In this process the two fiber composite components 1 and 2 are integrally connected by way of an adhesive layer 6 arranged in the overlap region between the cured component regions.

[0029] Subsequently, the mechanical reinforcement means are fed through the partial regions 3a and 3b that do not contain synthetic resin, in order to produce the additional mechanical connection. Finally, the dry partial regions 3a and 3b are also provided with synthetic resin, namely in an infusion process. After the synthetic resin placed in the partial regions 3a and 3b has been cured, a secure integral and mechanical connection between the two fiber composite components 1 and 2 has been produced.

[0030] The partial regions 3a and 3b, which in the initial state are dry, can be produced by inserting a filler during the production of the fiber composite components 1 and 2 from fibers 4 and synthetic resin 7.

[0031] In addition, it should be pointed out that comprising does not exclude other elements or steps, and a or one does not exclude a plural number. Furthermore, it should be pointed out that characteristics or steps which have been described with reference to one of the above exemplary embodiments can also be used in combination with other characteristics or steps of other exemplary embodiments described above. Reference characters in the claims are not to be interpreted as limitations.

LIST OF REFERENCE CHARACTERS

[0032] 1 First fiber composite component

[0033] 2 Second fiber composite component

[0034] 3 Partial region that does not contain synthetic resin

[0035] 4 Fibers

[0036] 5 Pins

[0037] 6 Adhesive layer

[0038] 7 Synthetic resin

[0039] 8 Threads

[0040] a Wall spacing

[0041] b Web spacing