| 摘要 |
PURPOSE:To improve vibration damping factor without causing deterioration of performance due to addition of other component, by setting a vibration damping factor of a reinforced resin composite material, in which a plurality of kinds of carbon fiber bundles having different elastic moduli are arranged dispersively almost uniformly in one direction, to be higher than any one substituted with one kind of the constituting carbon fiber bundles at the same volumetric rate. CONSTITUTION:A large number of carbon fiber bundles 1 and 2 of a plurality of grades having different elastic moduli arranged in parallel in one direction are distributively arranged almost uniformly so as to be adjacent to each other. A matrix resin 3 is impregnated into the aggregation of the carbon fibers 1 and 2, which are solidified, connected dynamically so as to produce a carbon fiber reinforced composite material (CFRP). Thus, deterioration of the elastic modulus and specific rigidity due to further addition or substitution of a component other than the carbon fiber improved. On the outer periphery and/or the inner periphery of the CFRP, one or more reinforced layer consisting of the carbon fiber bundles arranged in parallel in a direction crossing the direction of the carbon fiber bundles 1 and 2 may be layered. |
