METHOD FOR PRODUCING A CURVED HONEYCOMB STRUCTURE MADE FROM COMPOSITE MATERIAL

摘要

A method of fabricating a curved cellular structure includes making an expandable fiber structure by multilayer weaving between layers of warp yarns and layers of weft yarns, the structure having zones of non-interlinking extending in the thickness of the structure, the non-interlinking zones spaced apart from one another by portions of interlinking between layers of weft yarns, the portions of interlinking offset by one or more weft yarns in a direction parallel to the direction of the layers of weft yarns between each series of these planes; impregnating the fiber structure with a resin; expanding the fiber structure on support tooling to form a cell in the fiber structure at each zone of non-interlinking, the tooling also presenting a curved shape corresponding to the shape of the cellular structure that is to be fabricated; and polymerizing the resin of the fiber structure to form a curved cellular structure.

主权项

1. A method of fabricating a curved cellular structure, the method comprising:
making an expandable fiber structure having zones of non-interlinking extending in a thickness of the fiber structure, the zones of non-interlinking being spaced apart from one another by portions of interlinking; impregnating the fiber structure with a resin that is a precursor for a determined material; expanding the fiber structure on a support tooling so as to form a cell in the fiber structure at each zone of non-interlinking, the support tooling presenting a curved shape corresponding to the shape of the cellular structure that is to be fabricated; and polymerizing the resin of the fiber structure so as to form a curved cellular structure having a plurality of cells; wherein the fiber structure is made by multilayer weaving between a plurality of layers of warp yarns and a plurality of layers of weft yarns, repeating a series of successive weave planes, each having portions of interlinking in which at least one warp yarn interlinks weft yarns from at least two adjacent layers of weft yarns, and wherein the portions of interlinking are offset by one or more weft yarns in a direction parallel to the layers of weft yarns between each series of weave planes.