Method of strengthening preforms for the fabrication of heat resistant composite material parts, in particular parts in the shape of sails or panels.

摘要

The shaping of the fibrous preform (10), in order to keep it in a desired shape and with a desired degree of compacting, before densification by vapour-phase chemical infiltration, is carried out by binding the preform (10) on a rigid shaper (12) by means of filaments (30) traversing the preform and passing through holes (14) of the shaper. The binding filaments (30) are made from carbon or from ceramic. Before binding, a covering layer (16) may be disposed on the face of the preform (10) opposite that facing the shaper.