Method for producing integrally stiffened fiber reinforced plast

Details Method for producing integrally stiffened fiber reinforced plast Method for producing integrally stiffened fiber reinforced plast

1983-02-22

1985-01-08

Lesmes, George F.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156247, 156249, 156293, 1563031, B29B 114

Patent

active

044926073

ABSTRACT:
A method for producing T-section integrally stiffened reinforced panels formed of parallel stringers or stiffeners having a T-section, formed of fiber reinforced resin, co-cured to a skin component to be reinforced, also formed of fiber reinforced resin, comprises first forming a rubber-like, e.g., silicone rubber, form block containing T-shaped grooves corresponding to the T-section stiffeners. Lay-ups in the form of fiber reinforced partially cured thermosetting resin T-shaped stiffeners are then forced into the grooves of the rubber-like form block in spaced parallel relation therein, and the center of the T-section stiffeners between the flanges thereof is filled with unidirectional tape comprised of fiber reinforced partially cured thermosetting resin. An outer skin formed of fiber reinforced partially cured thermosetting resin fabric is then placed over the rubber-like form block and the T-section stiffeners therein. A top plate is then applied over the outer skin and the entire assembly is vacuum bagged and cured under heat and pressure to co-cure the parallel lay-ups or stiffeners in the form of T-section reinforcements, to the outer skin, to provide a uniform unwarped integrally stiffened panel.

REFERENCES:
patent: 2172466 (1939-09-01), Edwardes
patent: 4256790 (1981-03-01), Lackman
patent: 4331723 (1982-05-01), Hamm

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