Composite structural panel having a face sheet reinforced with a channel stiffener grid
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United States of America Patent
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Aug 29, 2000
Grant Date -
N/A
app pub date -
Jan 27, 1999
filing date -
Jan 27, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A composite structural panel is formed of a single composite face sheet with a stiffener grid adhesively attached to one side of the face sheet. The stiffener grid if formed of an interlocked set of parallel first elongated grid channels extending in a first direction and parallel second elongated grid channels extending in a second direction. Each grid channel is a hollow channel section including two shear walls formed of a shear wall composite material having woven bidirectional shear wall fiber reinforcement cloth embedded in a shear wall matrix, and a cap extending between the top of each of the two shear walls. The cap is formed of a cap composite material of composite material having unidirectional cap fiber reinforcement embedded in a cap matrix, with the unidirectional cap fiber reinforcement extending parallel to the direction of elongation of the grid channel.
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