CAJ | 학술논문

碳纤维增强复合材料的阻尼性能对结构的减振能力具有重要影响。复合材料的阻尼机理与均质的各向同性材料有很大不同。利用瞬态冲击振动梁法得到了不同树脂基体、不同纤维铺层角国产碳纤维增强复合材料的动态特性数据，并提取了模态频率与模态损耗因子，研究了树脂基体材料和纤维铺层角对复合材料动力学性能的影响规律，同时研究了材料的阻尼性能随着振动频率的变化规律。实验结果表明，603基体的复合材料比605基体及606基体的复合材料具有更高的模态损耗因子；同样的基体，增大铺层角，结构柔度增大，损耗因子也增大；随着振动频率变化，在某一频率下，模态损耗因子出现了峰值。
탄섬유증강복합재료적조니성능대결구적감진능력구유중요영향。복합재료적조니궤리여균질적각향동성재료유흔대불동。이용순태충격진동량법득도료불동수지기체、불동섬유포층각국산탄섬유증강복합재료적동태특성수거，병제취료모태빈솔여모태손모인자，연구료수지기체재료화섬유포층각대복합재료동역학성능적영향규률，동시연구료재료적조니성능수착진동빈솔적변화규률。실험결과표명，603기체적복합재료비605기체급606기체적복합재료구유경고적모태손모인자；동양적기체，증대포층각，결구유도증대，손모인자야증대；수착진동빈솔변화，재모일빈솔하，모태손모인자출현료봉치。
Damping performance of domestic carbon fiber reinforced composite materials is investigated by vibration-beam experiments. Unidirectional continuous fiber reinforced laminates with different fiber angles were fabricated from T300/605, T300/606 and T300/603 to investigate the effect of matrix and fiber angle on the damping of composites. The results show that, the 603 matrix composite had a higher loss factor than the 605 and 606 in the 0 degree orientation. The 30 degree fiber angle material exhibited a higher loss factor that 0 and 15 degree’s, while its stiffness capacity decreased a lot. For each kind of the composites tested, with the change of vibration frequency, there appeared the maximal loss factor at a certain frequency.