Fibrous preform for a turbo machine blade, which preform is obtained by one-piece three-dimensional weaving.
A fibrous reinforcement structure for a composite part is formed by multilayer three-dimensional weaving with a satin-type weave or multi-satin weave.
The present invention relates to a method for producing a one-piece preform for a composite structure, said preform being produced by means of a three-dimensional weaving method.
It can be also formed by three-dimensional weaving with at least one core interlock weave (72) and weaving with a fabric-, satin or skin twill-type weave, wherein skin weaving is of a multilayer or two-dimensional type. .
Turbomachine blade (100) made of a composite comprising a fibrous reinforcement obtained by the three-dimensional weaving of yarns and densified by a matrix, the blade comprising a first part constituting a blade airfoil (120) and a blade root (130).
Comparing with prior three-dimensional weave-molding equipments, the three-dimensional weave-molding equipment for composite material is highly automatic.
The thickness of the compressible, three-dimensional weave provides for a larger dimensional tolerance at each bond line.
Problems of prior three-dimensional weave-molding equipments including simple cross-sections of finished parts, and too much pores in the finished parts are solved.