Effect of reduced graphene oxide reinforcement on creep behavior of adhesively bonded joints

Abstract

The creep behaviour of adhesively bonded joints is one of the major concerns in modern industry due to their application at relatively high temperature. In this re-search, the effect of added RGO on the creep behaviour of the Araldite 2011 adhesive is investigated. Uni-axial creep tests have been carried out on neat Araldite 2011 and RGO added adhesive at different stress and temperature levels. It has been shown that adhesive with RGO particles demonstrate higher creep resistance. Also, general time hardening models are developed for both materials and their constitutive coefficients have been determined using creep test data. Based on these models, the creep behavior of single lap joints has been simulated using finite element solution method. The results are compared with experimental data and good agreement has been observed that reflects the robustness of the model. It has been shown that joints with added RGO adhesive have significantly higher creep strength.