Affiliation:
1. Faculty of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran
Abstract
The effect of adding different percentages of nano-graphene oxide (NGO) into the epoxy resin on the mechanical properties of NGO/epoxy and maximum peeling force of fiber-metal laminates (FMLs) with composite cores are investigated in this paper. Three different percentages of NGO including 0.1, 0.35 and 0.50 weight percentages (wt. %) are used to fabricate the tensile test samples of NGO/epoxy. Hand lay-up method is used to fabricate FML specimens with glass fiber reinforced plastic (GFRP) core and aluminum faces. Tensile tests are examined and the Young’s modulus and ultimate stress of NGO/epoxy samples are determined. It is found that after adding of 0.1 wt. % of NGO into the epoxy resin, the ultimate tensile strength decreased by 13.4% from 25.3 to 21.9 MPa. Moreover, using peeling test, the separation force between aluminum faces of Al/GFRP laminates are obtained. Based on the results, when 0.1 wt. % of NGO is mixed with the epoxy, the maximum peeling force of FML increases by 16% and amounts to 4 N/mm. Based on the results, when NGO is used next to micro fibers in the construction of composite core, they have an effective role on the interlayer adhesion of fibrous composites.
Funder
Shahrood University of Technology