This article examines the mechanical behavior of Basalt fiber-reinforced epoxy (BFRE) and a new type of fiber metal laminates (FMLs) composed of steel, aluminum, and BFRE named as Basalt fiber metal laminate (BFML) under tensile and bending loads. To study the effect of fillers in epoxy, the micro glass powder (MGP) was only added into the epoxy resin in BFRE composites at various volume fractions. It was found that the MGP had no significant effect on tensile strength, but it raised the stiffness and decreased the failure strain of BFRE. On the other hand, bending strength increased by adding MGP. BFML showed superiority in energy absorption via tensile strength. This FML had flexibility much higher than that of BFRE. Adding MGP or metal layer to basalt-reinforced composites improved the mechanical properties in tensile and bending loads. Selective bending specimens of BFRE are studied by SEM to show the positive role of MGP in raising the bending strength and further analysis of the nature of fracture surfaces. High fragmentation of matrix was obvious.
Recently, fiber metal laminates (FMLs) have attracted considerable application in many industries due to their outstanding properties. FMLs are hybrid materials that are fabricated by adhesion of thin layers of metals and fiber-reinforced composites. It should be noted that the reinforcing mechanisms of nanoparticles on the polymeric composites have been well-established, but there is limited literature regarding the influence of nanoparticles on the mechanical behavior of FMLs and adhesively bonded joints (ABJs) between metal sheets and polymeric composites. To date, various nanofillers including carbon nanotubes, graphene nanoplatelets, clay nanoparticles and oxide nanoparticles have been used for improving the mechanical properties of FMLs, and ABJs. The performed studies revealed that the efficiency of nanoparticles in improving the properties of FMLs and ABJs mainly dependent on various factors such as surface treatment of metal sheets, type of nanoparticles, the morphology of nanoparticles, the size of samples, fabrication parameters, etc. However, the effects of parameters on the properties of FMLs and ABJs reinforced with nanoparticles have not considerably discussed in the literature. This review paper aims to review the existing related papers regarding the effects of nanoparticles on the mechanical properties of FMLs and ABJs in the term of adhesion between metal sheets and polymers.