High strength, high stiffness, curved composite member

Details High strength, high stiffness, curved composite member High strength, high stiffness, curved composite member

1995-08-18

1996-12-03

Raimund, Christopher

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 363, 428113, 428257, 428258, 428259, 428284, 428294, 428302, 428408, 428902, B29D 2200

Patent

active

055806260

ABSTRACT:
The invention provides a tubular composite member which has a plurality of plies and a generally elongate and selectively curved axis. The plies can include helically oriented fiber components, a matrix material, and thermoplastic tubes. An intermediate layer preferably has two tri-axially braided plies arranged at selective angles relative to the member's axis and as a function of the curvature of the member. Interior and exterior plies of circumferential windings can be part of the member such that the intermediate ply is contiguous and between the interior and exterior ply. In one practice, the member can be formed into a selective shape and then cured. Alternatively, the member is formed between a thermoplastic core and a thermoplastic sheath to facilitate a secondary process of heating and bending the member into a selective axially-curved shape.

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