Wang Shenbiao, Li Peng, Fan Baijia, Zhao Yuan, Yu Shenglin, Tan Jianbin, Zhang Changyou
School of Mechatronics and Vehicle Engineering, East China Jiaotong University, Nanchang 330013, China.
Polymers (Basel). 2025 Mar 12;17(6):749. doi: 10.3390/polym17060749.
Due to the anisotropic structure and mechanical properties of composite laminates, internal damage cracks can easily occur. In this study, orthotropic anisotropic glass-fiber-reinforced polymer composites were used as the repair object. Firstly, the anisotropic material was analyzed using the finite element method, the self-healing structural compliance, water head loss, and volume percentage of the microvascular network were taken as the objective functions, and the topology optimization of the microvascular network structure was carried out using non-dominated soring genetic algorithm II. Secondly, the self-healing material with a wall-less microvascular network was prepared via the vacuum-assisted resin transfer molding process and the embedded wire removal method. Finally, the light repair performance was tested using the three-point bending test. The results show that in the case of no intervention for light repair, the average maximum failure load of the self-healing structure after embedding the microvascular network can reach 94.06% of that before embedding; with the introduction of real-time light repair, the average maximum failure load of the self-healing structure with light repair was increased by 4.1% compared with the self-healing structure without light repair. Meanwhile, the second peak load of the light-repaired structure can reach 51.36% of the average maximum failure load, which is 28.56% higher than that of the non-light-repaired structure.
由于复合材料层压板的各向异性结构和力学性能，内部损伤裂纹很容易出现。在本研究中，将正交各向异性玻璃纤维增强聚合物复合材料作为修复对象。首先，采用有限元方法对各向异性材料进行分析，将自修复结构柔度、水头损失和微血管网络体积百分比作为目标函数，使用非支配排序遗传算法II对微血管网络结构进行拓扑优化。其次，通过真空辅助树脂传递模塑工艺和埋线去除法制备了具有无壁微血管网络的自修复材料。最后，采用三点弯曲试验测试了光修复性能。结果表明，在无光修复干预的情况下，嵌入微血管网络后自修复结构的平均最大破坏载荷可达嵌入前的94.06%；随着实时光修复的引入，有光修复的自修复结构的平均最大破坏载荷比无光修复的自修复结构提高了4.1%。同时，光修复结构的第二峰值载荷可达平均最大破坏载荷的51.36%，比未光修复结构高28.56%。
