METHOD FOR OBTAINING A PIECE OF COMPOSITE MATERIAL INCORPORATING A FILAMENT TENSIONING PHASE AND TOOLS FOR ITS IMPLEMENTATION

摘要

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