FIELD: construction.
SUBSTANCE: invention relates to sound attenuation panels and method for fabricating sound attenuation panel of curved shape. Method comprises the following steps: impregnation of fiber structure defining a cellular structure with ceramic precursor resin; polymerization of ceramic precursor resin while holding the fiber structure on the device presenting a curved shape corresponding to the final shape of cellular structure; attachment of the first and second skins with cellular structure; each skin is formed by fiber structure impregnated with ceramic precursor resin, both skins are attached to said cellular structure before or after polymerizing the resin of said skins; pyrolyzation of assembly constituted by the cellular structure with the first and second skins; densification of said assembly by chemical vapor infiltration.
EFFECT: invention provides fabrication of sound attenuation panel made of composite materials with ceramic matrix having curved shape and corresponding to the shape of soundproofing element.
10 cl, 27 dwg
