Spatially varied interfaces for composite materials
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorBenji Maruyama
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Abstract
A method for controlling the interface in a composite between the matrix material and reinforcing filaments or fibers in a composite structure which comprises the application of a patterned coating or combination of coatings on the reinforcing filaments or fibers to vary the bond between the reinforcement and the matrix. Proportioning of weak- and strong-bonded areas, their respective strengths, and design of bonding patterns can be tailored to the materials requirements of the composite. This method can be employed to prepare metal, ceramic and polymer matrix composites.
Claims10
A method for fabricating a fiber- or filament-reinforced matrix composite structure comprising the steps of (a) partially coating a reinforcing fiber or filament with a material which either promotes or deters bonding between the reinforcing fiber or filament and the matrix material to provide a patterned coating, (b) combining the coated fiber or filament with a matrix material to provide a preform, and (c) densifying the preform to provide said composite.
Dependencies are inferred from the claim text.