Improving the Mechanical Properties of Fiber Metal Laminate Composite Used in Aircraft Wing

Abstract

The purpose of this study is to reduce weight and improve the mechanical properties of aircraft wing using Hybrid materials known as fiber metal laminates (FMLs). In this study, seven layers were used to produce the FMLs that consist of aluminum alloy2024-T3 reinforced by carbon and glass fibers bonded with blend of epoxy-resole. The Carbon Glass Reinforced Aluminum Laminates (CAGRALLs) was used as FMLs. The results showed that The CAGRALLs gave good mechanical properties because of increasing in tensile strength, elongation at fracture and impact toughness except flexural strength by comparing with other FMLs using commercial epoxy. The increasing in layers led to weaken adhesion force between layers of FMLs caused decreasing almost mechanical properties. The FMLs has good mechanical properties by using carbon and glass fibers by comparing with carbon and jute fibers. The CAGRALLs have higher numbers of cycles at failure under cyclic loadings than Aramid Reinforced Aluminum Laminates (ARALLs). The CAGRALLs have lower density by comparing with aluminum alloy 2024-T3 that used in manufacturing of aircraft wing.

A combined experimental-numerical analysis of a novel deformable sandwich structure for morphing wing applications

“…Since the wing plays a major role in the aerodynamics of the airplane, most research has been focused on the design of the wing with the potential of smart deformation [6][7][8][9][10][11][12][13][14]. The deformation of the wing during the flight for the airplane comprises the deformation within the wing plate, including the wing sweep angle change, the change in wingspan and the change in the wing chord, or the deformation out of the wing plate, including the wing twist, the change of the wing dihedral/gull angle or the wing spanwise bending [1].…”