In many applications of advanced graphite filament composites, the limiting factors in the component design are the transverse tensile, interlaminar shear, or impact properties. These factors restrict the potential use of advanced graphite filament composites in such areas as aircraft surface panels and components and fan blades for advanced air breathing turbine propulsion systems. Their potential use is restricted though other characteristics of the material are competitive or even advantageous ...
This program explored potential avenues for maximizing the impact strength of advanced graphite composites without significantly affecting other directional strength properties or producing significant weight penalties. The approach involved the incorporation of third phase supplementary thin ply reinforcement added to the basic graphite composite. Materials which were evaluated were PRD-49, Thornel 400, and S-2 glass yarns. A potential second area of impact improvement which was investigated involved the use of ...