GNP coated glass-carbon/epoxy inter-layer hybrid composite laminates were manufactured using a VARI process. To compare the performance of hybrid composites with the baseline materials, glass/epoxy, carbon/epoxy and glass-carbon/epoxy inter-layer hybrid composite laminates were also manufactured. Five types of composites were fabricated for the current investigation, and each composite contains five layers of fabric. The hybrid composites consist of four layers of glass and one layer of carbon fabric. The lay-up sequence was two layers of glass, one layer of carbon and then two layers of glass fabrics. The ratio of glass to carbon fibre by volume in the composites was 90:10. The schematic diagram of the stacking sequence of glass, carbon and glass/carbon hybrid composites is shown in Fig. . A peel ply was used on the bottom and top side of the layered fabric to ensure easy de-molding of composites. In addition, a mesh fabric was also placed on top to ensure an even flow of resin during the infusion process. The preform was sealed by a plastic bag and vacuum pressed using a pump. EL2 epoxy laminating resin and AT30 slow epoxy hardener were degassed separately for 1 h and then mixed together. The mixed resin was again de-gassed for 30 min to ensure there were no bubbles inside the resin. Finally, the resin is carefully sucked into the preform through the resin inlet and outlet tube using a vacuum pump. The resin-infused preforms were cured at room temperature for 48 h. Five different types of composite laminates were manufactured, and the list of laminates is presented in Table .