Placement process for elements of a self-stiffened panel of...

Details Placement process for elements of a self-stiffened panel of... Placement process for elements of a self-stiffened panel of...

2007-09-18

2007-09-18

Yao, Sam Chuan C. (Department: 1733)

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

C156S212000, C156S224000, C156S226000

Reexamination Certificate

active

10999797

ABSTRACT:
A process for placing elements of a self-stiffened panel of preimpregnated composite. The panel includes a base skin and a plurality of U-shaped stiffeners, with an interfacing structure including a nail and a nail-head. The process includes draping plies to form the base skin; placing and shaping at least one reinforcing ply on a set of punches; forming half-nails; placing a half-nail on the sides of each punch covered by the reinforcing ply; positioning the punches side by side in inverted U-positions; placing the nail-heads; compacting the set of punches; turning the punches 180 degrees; positioning the set of punches on the base skin; and withdrawing the set of U-shaped punches.

REFERENCES:
patent: 5538589 (1996-07-01), Jensen et al.
patent: 2 105 254 (1983-03-01), None

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