Composite structures having embedded mechanical features

Abstract

A complex-shaped, three-dimensional fiber reinforced composite structure may be formed by using counteracting pressures applied to a structural lay-up of wetted fibers with mechanical features embedded or encapsulated therein. The mechanical features may be located on or at least partially between two or more pressurizable members, which may be internally pressurized within a mold. The mechanical features may operate as bearing plates, attachment fittings, or other structural elements. Assemblies of pressurizable members, fiber plies and mechanical features may be arranged to create complex composite structures with predefined load paths, enhanced structural capability or both.

What is claimed is: 
     
         1 . An article for use in compression molding, comprising:
 a first side in contact with a first ply of a plurality of fiber plies, the first ply arranged on a first pressurizable member;   a second side in contact with a second ply of the plurality of fiber plies, the second ply arranged on a second pressurizable member; and   a portion for coupling the article to a mechanical fastener.   
     
     
         2 . The article of  claim 1 , wherein the portion is accessible via a either the first plurality of fiber plies or second plurality of fiber plies. 
     
     
         3 . The article of  claim 1 , wherein the portion comprises an internally threaded portion of the article. 
     
     
         4 . The article of  claim 1 , further comprising a locating stud. 
     
     
         5 . The article of  claim 4 , wherein the locating stud comprises internal or external threads. 
     
     
         6 . The article of  claim 1 , wherein the article comprises a pre-cured composite material. 
     
     
         7 . The article of  claim 1 , wherein the article is indexed to an indexing port of either the first pressurizable member or second pressurizable member.