Manufacturing method of a stiffener made of polymeric composite material reinforced with carbon fiber, CFRP, with a "T" cross section, wherein the stiffener is obtained from a preform (100) comprising a soul (120) and a foot (130), wherein the foot (130) corresponds to an edge of the stiffener configured to be in contact with an aircraft panel, and wherein the soul (120) corresponds to the remaining part of the stiffener and which comprises an edge of the soul (120a), the manufacturing method comprises the following steps: obtaining two laminates (110a, 110b) that comprise a set of layers of composite material, shaping the two laminates (110a, 110b) by folding the two laminates (110a, 110b) into an "L" cross section, joining the two laminates (110a, 110b) to obtain the preform (100) with a "T" cross section, molding the edge of the soul (120a) to obtain a semicircular cross section, applying to the edge of the soul (120a) a strip of semi-cured carbon fabric (L1), a wet strip of prepreg fiberglass (L2) in cool and curing the preform (100) to obtain the stiffener with a "T" cross section with the net edge of the soul (120a).


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    Title :

    MANUFACTURING METHODS OF NET STIFFENERS


    Additional title:

    HERSTELLUNGSVERFAHREN FÜR NETZVERSTEIFUNGEN
    PROCÉDÉS DE FABRICATION DE RAIDISSEURS DE FILET



    Publication date :

    2024-02-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B29D PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE , Herstellen besonderer Gegenstände aus Kunststoff oder aus Stoffen in plastischem Zustand / B29L INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES , Index-Schema für besondere Gegenstände in Verbindung mit Unterklasse B29C / B64C AEROPLANES , Flugzeuge



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