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US 5,863,635 AGranted
Composite detail having Z-pin stubble
AssigneeThe Boeing Company
InventorJames J. Childress
Life of this patent
Estimating the term…
Abstract
I improve the impact shock resistance of bonds between composite elements by including Z-pin reinforcement. I prepare stubbled composite structure by using peel plys over the appropriate surface of the composite during pin insertion using conventional processes. I then use the stubbled composite structure with padups, as necessary, to produce the Z-pin reinforced joint or bond between composite elements using any of adhesive bonding, cocuring, or thermoplastic welding.
Claims8
A prefabricated aerospace composite detail part, comprising:
- (a) cured and consolidated, fiber-reinforced organic matrix resin aerospace composite structure;
- (b) Z-pin fiber reinforcement protruding from at least a portion of the resin composite to define a bond line to provide stubble;
- areal density of said Z-pin reinforcement is between about 0.375 and 150% and
- (c) an uncured resin padup covering and protecting the stubble.
1 more element
Dependencies are inferred from the claim text.