Patent ID: 7524566

Claim:
A semi-fabricated intermediate article for producing a composite material, comprising a plurality of discs ( 10 ) that each respectively comprise a matrix material and that are arranged as a loose stack of said discs which are not yet joined to one another, each said disc ( 10 ) in said stack further comprising: a radially inner opening ( 11 ) surrounded by an inner disc edge and a disc ring portion surrounding said inner opening and surrounded by an outer disc edge, said disc ring portion comprising a groove ( 13 ) and at least one reinforcing fiber ( 14 ) embedded in said groove ( 13 ) with said matrix material surrounding and consolidated around said at least one reinforcing fiber in said groove, thereby forming a fiber reinforced disc ring section, said reinforcing fiber ( 14 ) and said groove ( 13 ) being spaced radially outwardly from said inner disc edge thereby forming an inner first disc ring section free of reinforcing fiber, said reinforcing fiber ( 14 ) and said groove ( 13 ) being spaced radially inwardly from said outer disc edge thereby forming an outer second disc ring section free of reinforcing fiber, said fiber reinforced disc ring section being positioned between said first and second disc ring sections free of reinforcing fiber.