Development of fiber metal laminate composite with different glass fiber GSM

Abstract

The feasibility of utilizing 8090 Lithium-Aluminium alloy and glass fibre sheets to develop composites with enhanced stiffness and durability, particularly Fibre Metal Laminates (FMLs). Various methods were used to treat the aluminum–lithium sheets to achieve the necessary thickness and strength. The improved procedure was then used to prepare FMLs 4/2. The development of fiber metal laminate (FMLs) has used 300 and 600 GSM (gram per square meter) glass fibre sheets. The mechanical characteristics of the FMLs were evaluated using a floating roller and tensile strength tests. The T3 doping condition was shown to be primarily responsible for the strengthened aluminum–lithium alloy. FMLs, on the other hand have demonstrated a slight increase in strength and a noticeable improvement in elastic modulus compared to high GSM. This was the case regardless of the fibers plies with sample orientation. Despite their different densities, FMLs exhibit remarkable interlaminar properties across various GSMs. The tensile strength can be increased in FMLs by using a newly designed composite with a high GSM value, which has been proved in the research. The maximum tensile value of the 600 GSM composite was reached at 480 MPa compared to an identical sample of 300 GSM. Insight into the origins of the improved properties of fiber metal laminate composites has been gained through microscopy and morphological study. SEM was then used to look at the morphologies of the epoxy-aluminum alloy sheet interface. The research observed that surfaces were thoroughly wetted; apparent surface energy played a crucial role in boosting adhesive bonding, whereas when surfaces were only partially wetted, the value of roughness can significantly alter adhesion strength.