A fiber reinforced composite material.

摘要

A fiber reinforced composite material is provided. This comprises: (a) at least one composite material layer, which comprises reinforcing fibers impregnated in a constrained type vibrational damping resin material, and (b) at least one composite material layer, which comprises reinforcing fibers impregnated in a resin material other than said constrained type vibrational damping resin material. By introducing the layer (a), it becomes possible to absorb flexural vibration and obtain a large vibrational damping property independently of orientation angles of reinforcing fibers.