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US 4,949,921 AGranted
Method of molding fiber reinforced glass matrix composite articles
AssigneeUnited Technologies Corporation
InventorsDavid C. Jarmon, Eric Minford
Life of this patent
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Abstract
A fiber reinforced glass matrix composite article and a process for fabricating a fiber reinforced glass matrix composite article are disclosed. The article has an outer layer with selectively oriented continuous fiber reinforcement and an inner core having randomly oriented discontinuous fiber reinforcement. The process utilizes the hydrostatic pressure provided by injection molding of the discontinuous fiber reinforced core to fully consolidate the continuous fiber reinforced outer layer.
Claims3
A process for fabricating a fiber reinforced glass matrix composite article, comprising:
- laying up at least one ply of glass impregnated continuous fiber tape against an inner surface of a die, wherein said continuous fibers are oriented against the die surface in a first direction and define a mold cavity, and subsequently
- introducing a fluid mixture of discontinuous fibers and molten glass into the mold cavity to substantially fill the mold cavity wherein said mixture is introduced into the cavity in a direction aligned with said first direction, and
- applying pressure to the fluid mixture to compress the fluid mixture and to compress and consolidate the continuous fiber tape to form a fiber reinforced glass matrix composite article having a discontinuous fiber reinforced glass matrix composite inner core and continuous fiber reinforced glass matrix composite outer layer.
Dependencies are inferred from the claim text.