Why carbon fiber and Kevlar®?
Carbon fiber has very high stiffness and tensile strength, but is weaker in compression, has low impact resistance, and poor vibration damping. Kevlar® has good compressive strength, high impact resistance, and excellent vibration damping. In other words, the strengths of the two different materials complement each other nicely. When properly used in combination, they produce a set of physical properties which cannot be matched by any single material.