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METHOD FOR MANUFACTURING AN ACOUSTIC ATTENUATION PANEL MADE OF AN OXIDE CERAMIC-MATRIX COMPOSITE MATERIAL
METHOD FOR MANUFACTURING AN ACOUSTIC ATTENUATION PANEL MADE OF AN OXIDE CERAMIC-MATRIX COMPOSITE MATERIAL
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机译:氧化物陶瓷基复合材料的声衰减板的制造方法
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摘要
A method for producing an acoustic attenuation panel from a composite material with a ceramic oxide matrix is provided that includes draping a plurality of plies having fibrous reinforcements including fibers of ceramic material in a mold to define a first skin, depositing blocks made of fugitive material on the first skin such that a space between two blocks is defined, and draping a second plurality of plies on a surface formed by the blocks such that a second skin is defined. Rounded corners of the blocks define radii for connecting the first and second skins with walls of a honeycomb core of the acoustic panel. The method further includes using a liquid medium to infiltrate the skins and spaces with a precursor of a ceramic phase, removing the liquid medium by evaporation or polymerization, and sintering to consolidate the ceramic oxide material and removal the fugitive material.
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