Metal particle modification of composite matrices for customized density appplications

摘要

A key aspect of composite technology lies in the ability to design a part to a specific strength and thickness.Recently,new applications were identified where it was desirable to vary the density in specific areas of a part.In this work,a model prepreg system was modified with fine metal and thermoplastic particles for specific weight tailoring.These particles were palced on the prepreg surface,forming a partially interlayer modified composite when laid up and curred.Experiments were performed on the specific gravity and fracture toughness of laminates made from the prepregs.The results showed that it is possible to tailor the density of a composite sysem without changing the manufacturing process or fracture toughness requirements.