MANUFACTURING METHODS OF NET STIFFENERS

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 stiff...

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Bibliographische Detailangaben
Hauptverfasser:	MIGUEZ CHARINES, Yolanda, PEREZ PASTOR, Augusto, COLAS GARCIA, Noelia
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AEROPLANES AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING AIRCRAFT AVIATION COSMONAUTICS HELICOPTERS INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES PERFORMING OPERATIONS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	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).