COMPOSITE STRUCTURE WITH LOW DENSITY CORE AND COMPOSITE STITCHING REINFORCEMENT

摘要

A composite structure includes: a core having a pair of opposed exterior surfaces and having a first density; a composite layup surrounding the core, the composite layup comprising a plurality of layers of fibers embedded in a matrix and extending along the exterior surfaces of the core, the composite layup having a second density; and stitching comprising fibers extending through the core and at least a portion of the composite layup.