Process for manufacturing composite material structures with collapsible tooling

A process for manufacturing stiffened structures ( 11 ) in composite materials formed by an outer coating ( 13 ) and a plurality of stiffeners ( 15 ) the cross-section of which has a closed form delimiting an inner opening ( 23 ), comprising the following steps: a) Providing a shaping tool ( 31 ); b...

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Bibliographische Detailangaben
Hauptverfasser:	FERNANDEZ PATRICIA TABARES, GARCIA AQUILINO GARCIA, CHARINES YOLANDA MIGUEZ, CEREZO ALBERTO RAMON MARTINEZ
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A process for manufacturing stiffened structures ( 11 ) in composite materials formed by an outer coating ( 13 ) and a plurality of stiffeners ( 15 ) the cross-section of which has a closed form delimiting an inner opening ( 23 ), comprising the following steps: a) Providing a shaping tool ( 31 ); b) Providing auxiliary male tools ( 37 ) with an inert material inside them coated with membranes suitable for curing c) Providing stiffeners ( 15 ) in fresh or cured condition; d) Arranging the stiffeners ( 15 ) in the tool ( 31 ) and the auxiliary male tools ( 37 ) in their inner openings ( 23 ); e) Laminating the outer coating ( 13 ); f) Curing the stiffened structure ( 11 ) with high temperature and pressure; g) Removing the auxiliary male tools ( 37 ) after reducing their volume by withdrawing the inert material thereof; h) Separating the cured stiffened structure ( 11 ) from the tool ( 31 ). The invention also relates to the auxiliary male tools.