Experimental and numerical assessment of impact resistance of FMLs including one rubber layer

Abstract

Fiber metal laminates have lately attracted considerable interest due to their diverse use in industrial sectors. Indeed, FMLs are virtually applied by combining both the metal and composite layers in order to achieve better outcomes. The preference of FML over metal or composite has been verified in many studies. The preliminary objective of the present study, however, is to make attempts to evaluate the influence of rubber layer on FML impact resistance once subjected to high-velocity impact. To this end, a numerical analysis is administered following an experiment. In this regard, the applied materials consist of 2024-T3 aluminum alloy, woven glass/epoxy prepreg and nitrile butadiene rubber. The steel projectile for impact tests was geometrically cylinder and flat-ended. It is noteworthy that all tests were run by a high-speed gas gun, and the numerical analysis was carried out in LS-DYNA software. Ultimately, the obtained results indicated that by inserting a rubber layer among the laminates, aluminum layer can bend further, and more kinetic energy can be dissipated from the projectile. Moreover, the special perforation energy and ballistic limit velocity, V 50 , increased dramatically.

Comparative study on low velocity impact response of carbon-fiber-reinforced polymer/ thermoplastic elastomer based fiber metal laminates with and without interleaving of elastomeric layer

“…It was found by Taherzadeh-Fard et al 29 that for ballistic applications, incorporating the elastomer proves beneficial compared to enhancing the thickness of the composite. Ballistic limit velocity of hybrid laminates subjected to high-velocity impacts increases considerably with the introduction of elastomer, according to Arzani et al 30 The impact of elastomer inclusion on the ballistic impact behaviour of bulletproof panels made of bilayer steel fibre - reinforced masonry was investigated by Maho et al 31 Rubber insertion has been discovered to work as a confining layer, preventing bullet ricochet.…”

Tribo-mechanical analysis of magnesium-based fibre metal laminates for structural applications

“…10 The rubber layer's addition in the aluminium/glass epoxy FML results in the aluminium layer to bend to a larger extent with the projectile's kinetic energy dissipation. 11 The addition of Graphene Nano Platelets (GNPs) with basalt fibre reduces the coefficient of friction by 23% and increases wear resistance by 60%. 12 The temperature had influenced the mechanical property of the Aluminum/ 3D glass fibres with PVC (Polyvinyl chloride) FMLs.…”