METHOD FOR THE PRODUCTION OF A CURVED CERAMIC SOUND ATTENUATION PANEL

摘要

The invention relates to a method for producing a curved sound attenuation panel, comprising the following steps: impregnating a fibrous structure defining a honeycomb structure (150) with a ceramic precursor resin; polymerising the ceramic precursor resin while maintaining the fibrous structure on a tool having a curved shape corresponding to the end shape of the honeycomb structure (150); applying first and second skins to the honeycomb structure (150), each skin being formed by a fibrous structure (200; 300) impregnated with a ceramic precursor resin and each skin being applied to the honeycomb structure before or after polymerisation of the resin of the skins; pyrolysing the assembly formed by the honeycomb structure and the first and second skins; and densifying the assembly by means of gas-phase chemical infiltration.