Method and tools for fabricating composite beams

B - Operations – Transporting – 29 – C

Patent

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B29C 33/00 (2006.01) B29C 70/46 (2006.01)

Patent

CA 2701813

Three simple tools are used to both preform and mold a composite layup into a J-beam. A first composite charge is preformed into a C-channel using a first tool, and a second composite charge is formed into a Z-channel using both the first tool and a second tool. The C-channel and Z-channel are laid up between the first and second tools, following which a perform composite cap and third tool are added to complete the layup and the tool assembly. The layup may be molded using vacuum bagging techniques and subsequently cured while held in the tool assembly.

L'invention porte sur trois outils simples qui sont utilisés pour à la fois préformer et mouler un assemblage composite en une poutre en J. Une première charge composite est préformée en un canal en C à l'aide d'un premier outil, et une seconde charge composite est formée en un canal en Z à l'aide à la fois du premier outil et d'un second outil. Le canal en C et le canal en Z sont assemblés entre les premier et second outils, à la suite de quoi un embout composite de préforme et un troisième outil sont ajoutés pour compléter l'assemblage et l'ensemble outil. L'assemblage peut être moulé à l'aide de technique de moulage au sac sous vide et ultérieurement durci tout en étant maintenu dans l'ensemble outil.

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