In this paper, the effect of embedded shape memory alloy (SMA) wires on the mechanical behavior of glass fiber-epoxy polymer composite reinforced with graphene nanoplatelets (GnPs) was studied. Composites with different GnPs contents, SMA wires number and pre-strain levels were prepared by hand lay-up method. Then, the composite samples were subjected to the bending tests to evaluate the bending strength, bending elastic modulus and healing efficiency. The fracture surface of samples was also characterized by SEM observations. The results showed that the bending behavior of samples was improved to 13.3% by adding 0.2 wt% GnPs. In contrast, the bending strength was decreased by 24.9% with increasing the number of SMA wires in the composite sample. However, the healing efficiency was increased by 57.4% with increasing the number of SMA wires and pre-strain levels. Furthermore, an improvement in the bending strength and healing efficiency can be achieved using GnPs and SMA simultaneously. Moreover, the polymer composite containing GnPs and SMA wires exhibited better interfacial adhesion between the resin and glass fibers.

中文翻译：

---

嵌入形状记忆合金线对自修复石墨烯-玻璃纤维增​​强聚合物纳米复合材料力学行为的影响

本文研究了嵌入形状记忆合金 (SMA) 线对石墨烯纳米片 (GnPs) 增强的玻璃纤维-环氧树脂聚合物复合材料力学行为的影响。通过手糊法制备具有不同 GnPs 含量、SMA 线数和预应变水平的复合材料。然后，对复合材料样品进行弯曲试验，以评估弯曲强度、弯曲弹性模量和愈合效率。样品的断裂表面也通过SEM观察表征。结果表明，通过添加 0.2 wt% GnPs，样品的弯曲行为提高到 13.3%。相比之下，随着复合材料样品中 SMA 线数量的增加，弯曲强度降低了 24.9%。然而，治疗效率提高了57。4% 随着 SMA 线的数量和预应变水平的增加。此外，同时使用 GnP 和 SMA 可以提高弯曲强度和愈合效率。此外，含有 GnPs 和 SMA 线的聚合物复合材料在树脂和玻璃纤维之间表现出更好的界面粘合性。