Mechanical Characterization and Comparison of Glass Fibre (GFRP) and Glass Fibre Reinforced with Aluminium Alloy (GFRAA)


  • Rambabu Kinnera, K.Sravanthi, N. Veeraswamy


Fibre metal laminates (FML’s) are good candidates for advanced aerospace structural applications and also in automotive applications due to their high specific mechanical properties especially fatigue resistance. The most crucial factor in manufacturing of these laminates is the adhesive bonding between aluminium and FRP layers. In this study, firstly the laminate specimens were designed in CATIA as per ASTM standards and analysed in ANSYS software. It was observed that glass fibre with aluminium alloy has less deformation strength compared to glass fibre reinforced polymer laminates. Then, after several glass-fibre reinforced aluminium laminates with different bonding adhesion were manufactured. Mechanical Tests like Tensile, Compression and Impact tests were carried out based on ASTM standard were then conducted to study the effects of interfacial adhesive bonding on impact behaviour of these laminates. It was observed that the damage size is greater in laminates with poor interfacial adhesion compared to that of laminates with strong adhesion between aluminium and glass layers. In addition, FMLs of with good adhesion bonding show better resistance under low velocity impact and their corresponding contact forces are about 25% higher than that of specimens with a weak bonding. Moreover, maximum central deflections in laminates with strong bonding are about 30% lower than that of FMLs with poor adhesion.