Composite material-stiffened panel and manufacturing method...

Details Composite material-stiffened panel and manufacturing method... Composite material-stiffened panel and manufacturing method...

2006-07-11

2006-07-11

Thomas, Alexander S. (Department: 1772)

Stock material or miscellaneous articles

Structurally defined web or sheet

Including stitching and discrete fastener, coating or bond

C428S119000, C428S122000, C428S178000, C244S123800, C244S119000, C244S133000

Reexamination Certificate

active

07074474

ABSTRACT:
A composite material-stiffened panel has a skin obtained by molding a fiber-reinforced resin composite material into a flat skin, stiffeners arranged in rows on one surface of the skin, and a fiber-reinforced resin-composite material stitched on the skin covering the stiffeners. The composite material-stiffened panel can be manufactured as follows: A first fabric material is placed on a tool having a panel-shaped surface. Stiffeners are placed on the first fabric materials. A second fabric material is placed on the stiffeners to cover at least some of the stiffeners. The second fabric materials are reformed to match the shape of the stiffeners. The reformed second fabric material is stitched on the first fabric material along edges of the stiffeners. All the materials are covered with a bagging film for vacuum. Resin is infiltrated into the fabric materials by a RTM or a RFI method. The infiltrated resin is heated to be hardened.

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patent: 0 650 825 (1995-05-01), None
European Search Report dated Mar. 6, 2002 (EP 01 31 0746).

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