Brief description of a piece of composite material incorporating a phase of the tensioning of the filaments and apparatus for implementing it.

摘要

The object of the invention is a process for obtaining a composite material part from a preform (12) of layers of fibers pre - impregnated with resin are stacked one on the other on a tool (18), each fiber comprising a plurality of filaments, said preform (12) is delimited by a lower surface, by an upper surface (22) and by a peripheral edge (24), said preform (12) being subjected to a polymerization phase, characterized in that it comprises a phase of the tensioning of the filaments of the preform, prior to the polymerization phase, which consists in exerting a traction force at each end of the filaments owing to a phenomenon of suction generated at the level of at least a portion of the edge (24) of the preform.