ピッチ系CFRPダンピング複合材料の創成と性能評価

抄録

Carbon fiber reinforced plastics (CFRP) have high specific rigidity and high specific strength. But it is poor in vibration damping. In this research, in order to improve the damping properties of CFRP, the damping behavior was investigated by dynamic mechanical analysis (DMA).The tan δ and E were calculated by the RKU equations. As a result, CFRP/polymer laminates were found to exhibit a high damping property by placing the 90 ° layers in the vicinity of core layer. A new approach of cutting part of damping sheet was proposed and both modulus and damping property could be obtained by adjusting the ratio of cutting part, which is effective way in designing optimum damping materials. It was found for CFRP materials RKU formula should be modified with the consideration of value of tan δ in CFRP layer, which will provide a better prediction for damping property.