Airbus Espana, S.l.

José Manuel Menéndez Martin

Augusto Perez Pastor

David Cano Cediel

Alfredo Güemes Gordo

Pedro Nogueroles Vines

The invention relates to a process for making swaged lighting holes () in planar areas of parts () made of preimpregnated composite, by means of which the part () is arranged between a female tooling () with the final shape of the bottom side of the swaged part and a caul plate () with the final shape of the top side of the swaged part, except in an area () which must be swaged, pressure Pis applied on the caul plate () in the area of the part () that must be maintained substantially planar, and pressure Pis applied by means of a male tooling () on the area () of the part () which must be swaged at a forward speed allowing the flow of the resin during the slippage of the fibers of the material so that it may deform, adapting to the final shape of the female tooling ().

Process for making swaged lighting holes in planar areas of preimpregnated composite parts

The invention relates to a composite structure () formed by a plurality of layers () including an optical fiber () for structural monitoring purposes which is at least partly embedded in said structure (), incorporating a protective cover () in those areas of its embedded part susceptible to needing repair, and to a process for repairing said embedded optical fiber comprising the following steps: identifying the optical fiber area in need of repair, removing material until reaching the cover (), extracting said area, removing the protective cover (), repairing the optical fiber (), relocating the repaired area in the structure and returning the removed material.

Composite structure with embedded optical fiber and a process for its repair

The invention relates to a composite structure () formed by a plurality of layers () including an optical fiber () for structural monitoring purposes which is at least partly embedded in a surface layer () of said structure (), and insulation means of the optical fiber () areas susceptible to repair with respect to the surface layer () in which they are integrated, particularly a protective cover () and top and bottom separating films (), and a process of repairing said areas comprising the following steps: removing the protective cover () and the top separating film (), extracting the area, repairing the optical fiber, relocating the area and providing a new protective cover ().

Composite structure with optical fiber embedded in one of its surface layers and a process for its connection and repair

A method of monitoring structural damage in a composite structure manufactured by co-curing, co-bonding or secondary bonding of several sub-components (), using fibre optic Bragg grating sensors attached or embedded to or between (in the bonding line) said sub-components, comprising a first step of measuring the wavelength spectra () of said Bragg grating sensors at the end of the manufacturing of the part, and in a known load condition, considered as reference and a second step of identifying the occurrence of a failure of the structure and the progress of said failure detecting the release of the residual stresses/strains stored during the curing process by measuring changes (tototo) with respect to said reference wavelength spectra.

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Madrid, Spain

José Manuel Menéndez Martin