A method for forming a fiber-reinforced thermoplastic acoustic panel (300) may comprise: stacking plies of thermoplastic composite sheets to a first thickness to form a top sheet (320); stacking plies of thermoplastic composite sheets to a second thickness to form a backskin (330); staking plies of thermoplastic composite sheets to a third thickness to form a stiffening member (312); forming the top sheet (320) in a first contour; forming the backskin (330) in a second contour, the second contour being different from the first contour; forming the stiffening member (312) comprising a shape having a plurality of peaks (314) and troughs (316); bonding the stiffening member (312) to the top sheet (320) and the backskin (330); and perforating the top sheet (320).


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    Title :

    CORRUGATED ACOUSTIC STIFFENING DEVICES AND METHODS


    Additional title:

    GEWELLTE AKUSTISCHE VERSTEIFUNGSVORRICHTUNGEN UND VERFAHREN
    DISPOSITIFS ET PROCÉDÉS DE RAIDISSEMENT ACOUSTIQUE ONDULÉ


    Contributors:

    Publication date :

    2023-03-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F02K JET-PROPULSION PLANTS , Strahltriebwerke / 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 / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT



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