Reinforced composite structure
DCFirst Claim
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1. A stiff reinforced composite structure comprising:
- a core;
first and second layers of fibrous material, the first and second layers bounding respective first and second opposed surfaces of the core and having respective exterior surfaces;
and a first set of continuous fibrous bundles extending in a repeating pattern over the exterior surface of the first layer, through the first layer, through the core;
through the second layer, over the exterior surface of the second layer; and
a matrix material joining the first and second layers of fibrous material, the fibrous bundles and the core into a stiff reinforced composite structure.
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Abstract
A reinforced composite structure (29) is disclosed. The structure is formed by opposed layers of material extending over a core and continuous bundles stitched in a repeating pattern through the opposed layers (30, 32) and the intermediate core (29) to form the reinforced composite structural member (29).
33 Citations
29 Claims
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1. A stiff reinforced composite structure comprising:
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a core;
first and second layers of fibrous material, the first and second layers bounding respective first and second opposed surfaces of the core and having respective exterior surfaces;
and a first set of continuous fibrous bundles extending in a repeating pattern over the exterior surface of the first layer, through the first layer, through the core;
through the second layer, over the exterior surface of the second layer; and
a matrix material joining the first and second layers of fibrous material, the fibrous bundles and the core into a stiff reinforced composite structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of making a stiff reinforced composite structure comprising the steps of:
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applying first and second layers of fibrous material over respective first and second opposed surfaces of a core material; and
sewing a set of continuous, fibrous bundles in a repeating pattern over the exterior surface of the first layer, through the first layer, through the core material, through the second layer, over the exterior surface of the second layer, and coagulating the first and second layers of fibrous material and the fibrous bundles with a matrix material; and
curing the matrix material, thereby joining the fibrous material, the fibrous bundles, the core and the matrix material into a stiff reinforced composite structure. - View Dependent Claims (14, 15, 16)
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17. A stiff reinforced composite structure comprising:
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a core;
first and second layers of fibrous material, the first and second layers bounding respective first and second opposed surfaces of the core and having respective exterior surfaces, internal fibers stitched between the first and second layers and through the core, at least some of the internal fibers extending between the first and second layers in a direction oblique to the first and second layers, and a matrix material joining the first and second layers of fibrous material, the internal fibers and the core into a stiff reinforced composite structure. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification