Anti-penetration performance of Ti/Al3Ti/Al laminated composites with graphene nanoplatelets

This is the authors' abstract. We don't add key points for this paper.

The potential of graphene nanoplatelets (GNPs) in enhancing composite materials is widely recognized. However, the specific mechanisms through which GNPs contribute to the anti-penetration performance of laminated metal composites (LMCs) remain unclear. In this study, molecular dynamics simulations are employed to investigate the impact of GNPs on the anti-penetration performance of Ti/Al 3 Ti/Al LMCs. The results show that the enhancement of the anti-penetration performance of Ti/Al 3 Ti/Al LMCs with a positive correlation with the number of GNPs layers. Specifically, the impact force of the projectile at the bottom edge of the Ti/Al 3 Ti/Al, Ti/Al 3 Ti/Al@GNPs1, and Ti/Al 3 Ti/Al@GNPs2 is 146.1, 451.1, and 478.1 nN respectively. The velocity of the projectile in Ti/Al 3 Ti/Al@GNPs LMCs is found to decrease to zero and then increase in the reverse direction. The GNPs cause the projectile to experience a rebound effect, which improves the material protection. The GNPs alter the dislocations motion laterally along the interfaces, improving the material anti-penetration performance and strength. This study reveals the enhancement of the protective properties of Ti/Al 3 Ti/Al LMCs by GNPs, which is also instructive for the design of impact protection in laminated composites.