Fiber reinforced composite structure having stepped surface

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United States of America Patent

PATENT NO 9056448
SERIAL NO

13869195

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Abstract

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Fiber reinforced composite structures having curved stepped surfaces are fabricated by laying up plies of fiber reinforced material over a tool having a stepped tool feature. The plies are rotated about a fixed axis as they are laid up to substantially form a fixed axis rosette pattern. The plies are angularly oriented such that at least certain of the plies have fiber orientations other than 0, +45, −45 and 90 degrees. Potential bridging of the fibers over the stepped tool features is reduced or eliminated by cutting slits in the plies in the area of the stepped features, so that the plies can be fully compacted.

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Patent Owner(s)

Patent OwnerAddress
THE BOEING COMPANY101 NORTH RIVERSIDE PLAZA CHICAGO ILLINOIS 60606-1596 UNITED STATES OF AMERICA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hawkins, Robert D Bonney Lake, US 15 327
Modin, Andrew E Enumclaw, US 43 792
Woods, Jack A Kent, US 15 366

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