Loading patent…
AssigneeAirbus Operations GmbH
InventorsDenis Soula, Sebastien Gohier, Anais Markowski
Estimating the term…
A method for manufacturing a thin structural component made of composite and intended to withstand, on the one hand, working loads and, on the other hand, accidental loadings. The method involves creating a dry fiber preform of the component that is to be manufactured, and impregnating the aforementioned perform with a matrix-forming resin by resin transfer. The perform is created by assembling at least one structural layer, a first surface reinforcing layer on a first face of the aforementioned structural layer, and a second surface reinforcing layer on a second face of the structural layer. A number of plies in the two surface reinforcing layers is first of all calculated so that the finished component will be able to withstand the accidental loadings, then a number of plies in the structural layer is calculated, with due consideration given to increases in structural strength contributed by the surface reinforcing layers so that the finished component will be able to withstand the working loads.
A method for manufacturing a thin composite material structural member designed to resist, firstly, operational stresses corresponding to stresses to which the member is normally subjected in use and, secondly, accidental stresses corresponding to outside stresses to which the member may be exceptionally subjected, said method comprising making a dry fiber preform, obtained essentially by stacking plies, of the structural member to be manufactured, and impregnating said dry fiber preform by resin matrix transfer, wherein the dry fiber preform is made by assembling at least one load-bearing layer, one first surface reinforcing layer on a first surface of said load-bearing layer and one second surface reinforcing layer on a second surface of the load-bearing layer opposite said first surface and wherein:
A thin composite material member made with the RTM process comprising within its thickness, at the center, a load-bearing core essentially comprised of oriented unidirectional resin fiber plies and, on either side, two protection layers each essentially comprised of at least one ply of woven resin-impregnated fibers.
Dependencies are inferred from the claim text.