Study on the impact of Nano-reinforcements on the fatigue strength of adhesive joints

Abstract

Single overlap joints had been created by combining two AISI 302 stainless steel sheets with the help of 3 M DP270 grade epoxy and their fatigue characteristics were examined under shear stress condition. Further, the effect of adding three distinct proportions of nano-titania with epoxy, on the mechanical characteristics of the joint was analyzed. The overlap lengths was selected as 20 mm and nano-titania proportions were elected as 1.0%, 2.0% and 4.0%, respectively during shear load condition. When the experimental findings were analyzed, it was shown that the mean damaging load associated with the usage of nano-dispersed adhesives rose significantly in general. As a consequence of the trials, it was discovered that the most effective nanoparticles proportion for boosting the fracture strength of adhesive joints is 4.0 percent, and the enhancement in rate of failure strength increase was noted as 85.52 percent. Additionally, it was shown that strain of nanoparticle had a noteworthy role in the shear characteristics of the adhesive junctions. Additionally, it has been shown that incorporating nanoparticles into the glue enhances junction extension. When the adhesive interfaces of the specimens were inspected, impairment was detected as adhesion dissociation, but nanoparticle replenishment had been detected as a combination of cohesive as well as adhesive characteristics.