Vibration Damping and Toughness Evaluations of CFRP Laminates with Smart Units Using Viscoelastic and Piezoelectric Films

本文主要采用有限元数值分析方法，主要借助于模态应变能方法，对具有智能单元的碳纤维复合材料层合板的减振增韧机理进行了详细的研究。此外，还制备了层间插入阻尼片的实际CFRP层合板，并对试件进行了冲击锤击和落锤试验，验证了实验评价层合结构技术有效性的可行性。

In this study, improvement mechanism of vibration damping and toughness of CFRP laminates with so-called smart units using visoelastic and piezoelectric films were investigated in detail by using FEM numerical analysis mainly with the aid of the modal strain energy approach. In addition, actual CFRP laminates with damping sheets inserted between the plies were prepared and then impact hammering and drop weight tests were carried out to the specimens, which certainly showed feasibility for experimentally evaluating a validity of the present laminated structural technology.