COMPOSITE SOUND ABSORPTION PANEL ASSEMBLY A composite panel assembly (100) includes first and second elastic membranes (104, 106) and a structure (102). The structure (102) has a first side (108) mounted to the first elastic membrane (104) and a second side (110) mounted to the second elastic membrane (106). Thestructure (102) includes a first honeycomb layer (116), a second honeycomb layer (118), and a plurality of necks (126). The first honeycomb layer (116) has partition walls (122) defining resonance cavities (126) that are covered by the first elastic membrane (104) along the first side (108). The second honeycomb layer (118) has partition walls (208) defining resonance cavities (210) that are covered by the second elastic membrane (106) along the second side (110). Thenecks(126) are disposed between and connect the first and second honeycomb layers (116, 118). Each neck (126) defines a channel (302) that is fluidly connected to a corresponding one of the resonance cavities (126) of the first honeycomb layer (116) and a corresponding one of the resonance cavities (210) of the second honeycomb layer (118). 112 104 104a 318 --- 108 -100 102-N~314 116 134- 310{ I 206 302 1| _-120 140 (304 204 312 208 322| 400) Form meta-structure with upper and lower honeycomb layers and 402 interconnecting necks via additive manufacturing Mount first elastic membrane to top side of meta-structure 404 Mount second elastic membrane to bottom side of meta-structure


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    Title :

    Composite sound absorption panel assembly


    Contributors:

    Publication date :

    2023-11-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES



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