Composite constant stress beam with gradient fiber distribution

Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness

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428170, 428 78, 428273, 428288, 428268, 428415, 428417, 428408, 267 47, 26433111, 264258, B32B 300, D04H 158, D32B 1710

Patent

active

050875035

ABSTRACT:
A composite beam having a constant stress geometry is provided wherein a varying fiber content in a fiber impregnated resin is employed across the beam's cross section to cause the neutral axis of the beam to shift toward the compressive side. The design provides the maximum deflection in the direction of the load before compressive failure occurs for a given size and shaped beam of equivalent stiffness.

REFERENCES:
patent: 3585094 (1971-06-01), Ruggles
patent: 4339490 (1982-07-01), Yoshioka et al.

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