The presented study aims to investigate the role of nano-carbon percentage on material properties of different composites. Recently, nano-carbon composites are used in different industries like aerospace. Thus, it seems necessary to determine the best amount of nano-carbon in composite materials. The best percentage of nano-carbon can be defined as the amount that causes an increase in some of the useful materials’ properties to the highest level. These useful characteristics may be Young’s modulus, tensile strength, yield strength, and fatigue life. In the presented research, by using the experimental data and applying analytical method, equations are developed to determine the best amount of nano-carbon in composite materials including CNT/2009 Al, epoxy SC-15 with MWCNT-COOH, glass fiber reinforced polymer, and graphene nanocomposites. Based on the results of this study, it appears that the best amount of nano-carbon for every composite material is different. Furthermore, it seems that even for each composite material’s property, the best amount of nano-carbon varies. Nevertheless, it appears that, it is possible to approximately distinguish the best amount of nano-carbon in composite materials in an especial environmental condition like a determined temperature.
Key words: Nano carbon, composite properties, strength, fatigue.
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