Interfacial performance of treated aluminum and Kevlar fibre on fibre metal laminated composites

The effect of Kevlar fibre surface modification and fibre hybridization on fibre metal laminates (FMLs) was investigated in this paper. Fibre metal laminates are interlaced layers of thin metals and fibre-reinforced plastics that constitute a hybrid composite material. The flexural strength of hybrid fibre metal composites was investigated from the three-point bending test at various hybrid ratios of sequence layers in FML composites. The Glass fibre, Kevlar fibre, and aluminum were taken for laminating the composite and reinforced with epoxy matrix. The adhesion property of fibre metal composites was enhanced by a modified aluminum surface treated with Sulpho ferric etching, and Kevlar surface is treated with epichlorohydrin pre-treatment. The flexural modulus and strain to failure results have been shown for various hybrid combinations, which affect the fibre metal composite and improved the interlaminar strength of GARALL composites.