Characterization of Fracture and Fatigue Behaviors of Next Generation Thermally Active Composite Materials and their Performance and Lifetime Enhancements

为了提高新一代热活性复合材料的性能和寿命，我们研究了其断裂和疲劳行为。对热活性复合材料在弯曲载荷作用下的断裂、变形和疲劳行为进行了理论和实验表征。研究了碳纳米管（CNT）的加入对聚合物材料断裂和疲劳行为的影响以及碳纳米管基聚合物复合材料的变形/损伤感知能力，为开发高性能、长寿命的复合材料取得了有益的成果。

We investigated the fracture and fatigue behaviors of next generation thermally active composite materials in order to improve their performance and lifetime. We characterized both theoretically and experimentally the fracture, deformation and fatigue behaviors of thermally active composites under flexural loading. Also, we examined the effect of carbon nanotube (CNT) addition on the fracture and fatigue behaviors of polymeric materials and the deformation/damage sensing ability of CNT-based polymer composites, and obtained the beneficial results for the development of high performance and long life composite materials.