System, method, and apparatus for structural lug formed from a combination of metal and composite laminate materials

摘要

A structural lug comprising a metallic base, composite middle layers, and outer layers of metallic material is disclosed. The metallic base of the structure is machined to accommodate the composite plies, which are located on each lateral side of the base and bonded to the base with adhesive. The composite material may comprise an adhesive-based resin with embedded fibers. The metallic base may be formed to minimize peel stresses in the composite layers. The top metallic layers are fitted over and bonded to the composite plies and act as the outermost layers of the lug. The lateral ends of the lug where the top layers come into contact with the machined base may be joined together with friction stir welding or mechanical fasteners to form the completed structure.