In the present study, the multi-walled carbon nanotubes (MWCNTs) and graphene nanoparticles were used as a reinforcement to fabricate glass fibre polymer composite at different orientations (unidirectional glass fibres 0° and 90°; woven glass fibres 0°/90° and 45°/45°). The composites were developed using hand lay-up-assisted vacuum bagging method at 1 torr pressure. The concentrations of nanoparticles (~diameter 5–20 nm) were varied in the range of 0.1–0.3 wt% in the matrix. The mechanical properties like impact strength, tensile strength and fatigue strength were carried out on Izod and Charpy machine, universal testing machine and computer-controlled machine under sinusoidal wave, respectively. It is observed that the glass fibre/epoxy composite blended with MWCNTs/graphene by 0.2 wt% has shown higher fatigue life by 56%, higher tensile strength by 36% and higher capability of energy absorption by 927.7% in notched type and lower capability of energy absorption by 155.43% in un-notched type, as compared to pure composite. The increment in properties is due to the better bonding between fillers and matrix. However, the increase of MWCNTs and graphene nanoparticles by wt% in composite laminates have shown lower fatigue strength because of the agglomeration of MWCNTs particles in matrix that caused the propagation of fatigue cracks under cyclic loading. Further, the damage behaviour of composite materials was analysed using scanning electron microscopy. It is found that a different damage behaviour in each composite is observed which is attributed to the matrix cracking, fibre rupture, fibre pullout, fibre split and fibre de-bonding.

在本研究中，多壁碳纳米管 (MWCNT) 和石墨烯纳米粒子被用作增强材料，以制造不同方向的玻璃纤维聚合物复合材料（单向玻璃纤维 0° 和 90°；编织玻璃纤维 0°/90° 和45°/45°）。复合材料是在 1 托压力下使用手糊辅助真空袋装方法开发的。纳米颗粒（~直径 5-20 nm）的浓度在基质中的 0.1-0.3 wt% 范围内变化。冲击强度、拉伸强度和疲劳强度等力学性能分别在悬臂梁夏比机、万能试验机和计算机控制机上进行了正弦波测试。据观察，玻璃纤维/环氧树脂复合材料与 MWCNTs/石墨烯混合 0.2 wt% 的疲劳寿命提高了 56%，与纯复合材料相比，缺口类型的拉伸强度提高了 36%，能量吸收能力提高了 927.7%，而无缺口类型的能量吸收能力降低了 155.43%。性能的增加是由于填料和基体之间更好的结合。然而，由于 MWCNTs 颗粒在基体中的团聚导致在循环载荷下疲劳裂纹的扩展，复合材料层压板中 MWCNTs 和石墨烯纳米颗粒的重量百分比增加显示出较低的疲劳强度。此外，使用扫描电子显微镜分析了复合材料的损伤行为。发现在每种复合材料中观察到不同的损伤行为，这归因于基体开裂、纤维断裂、纤维拉出、纤维分裂和纤维脱粘。