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1. (WO2018055647) METHOD FOR MANUFACTURING INTEGRATED COMPOSITE-MATERIAL STRUCTURES USING A MODULAR APPARATUS

Pub. No.:    WO/2018/055647    International Application No.:    PCT/IT2016/000219
Publication Date: Fri Mar 30 01:59:59 CEST 2018 International Filing Date: Sat Sep 24 01:59:59 CEST 2016
IPC: B29D 99/00
B29C 70/44
B29L 31/30
Applicants: LEONARDO S.P.A
Inventors: DI TOMMASO, Luca
IAGULLI, Gianni
RAFFONE, Marco
AVAGLIANO, Luigi
DE LUCA, Diego
DELLI CARRI, Alfonso
GROSSO, Felice
NANULA, Tommaso
Title: METHOD FOR MANUFACTURING INTEGRATED COMPOSITE-MATERIAL STRUCTURES USING A MODULAR APPARATUS
Abstract:
Method for manufacturing a panel structure (10; 10'; 10") made of composite material, comprising the following steps: a) forming a dry-fibre laminate (11) of the panel (10; 10'; 10") on a first unit (PT; PT"), the skin comprising a plurality of layers; b) forming or arranging a plurality of support blocks (20, 30; 20", 30"), a plurality of transverse and longitudinal dry-fibre stiffening elements (15, 13), each of the transverse and longitudinal stiffening elements comprising a plurality of layers; c) arranging in a coordinated manner the support blocks (20, 30; 20", 30") alongside each other on a second unit (40; CT; CT"), so as to form a dry-fibre stiffening grid with the transverse and longitudinal dry-fibre stiffening elements (15, 13) in contact with each other; d) turning over the second unit (40; CT; CT") with the support blocks (20, 30; 20", 30") and arranging it on the first unit (PT; PT") so as to position the dry-fibre stiffening grid on the dry-fibre laminate (11) of the panel, so as to obtain a dry-fibre panel structure, and e) subjecting the dry-fibre panel structure to vacuum resin infusion and subsequent heat treatment in an oven so as to obtain polymerization of the resin infused in the panel structure.