Multiscale Modelling of Adhesive Joints with Nano Fillers

Abstract

The study examines the strength and durability of single lap joint created using the identical epoxy adhesives (LY-556/AD 22962) that are single lap adhesively joined. As per credible research data available, epoxy adhesives and single lap adhesively bonded joints' failure strengths are influenced by a number of factors, and their strength can be increased using a number of different techniques. Addition of filler material to epoxy is one of the efficient techniques. A flexible natural raw material, cork powder is used to strengthen adhesives and SLJs that are adhesively bonded by acting as a crack-stopping filler. However, with change in concentration of filler, this behavior of cork powder changes. The current work focuses on evaluating differences in the structural characteristics of epoxy-based adhesives and adhesively bonded single lap joints at various temperatures and cork powder concentrations. A series of simulation have been performed for investigation of SLJs strength with LY-556 as epoxy adhesive and Aluminum 5052 as adherend. The adhesively bonded joint is tested at different temperature ranges from 25ºC, 50ºC, 75ºC and 100ºC with the concentration of cork powder ranging from weight percentages of 0.25, 0.5, 0.75 and 1.