Properties Aramid Fibers. Carbon Fibers 8 Composition Microstructure 6 Composites Synthesis/preparation Composition,materials design processing design 4 2 Performance wood. Cast (Utility properties) Stone Bronze lron Steel Aluminium 0 YEAR 1800 19002000 Hexahedron model Better understanding,remarkable PERFORMANCE progress ◇ Example:strength to density ratio of materials PROPERTIES ◇ A wide variety of new products,from SYNTHESIS/ dental materials to tennis racquets. PROCESSING STRUCTURE/ COMPOSITION Tetrahedron model Better understanding, remarkable progress  Example: strength to density ratio of materials  A wide variety of new products, from dental materials to tennis racquets. Tetrahedron model Hexahedron model Properties Microstructure Performance (Utility properties) Composition Composition, materials design & processing design Synthesis/preparation