STUDIES ON ENGINEERING PROPERTIES OF BINDERS LOADED WITH NANO-FILLERS FOR BETTER DESIGNED COMPOSITES

Rajesh Katiyar, Rajesh Kumar

Abstract: The study of single lap adhesive joints has been done to find out the mechanical strengths of variable overlap length, establishing maximum load bearing capacity using two component epoxy resin as binding material. The engineering properties studied are joint tensile strength and adhesive shear strength. The dimensions of the adherend metal plates were 25.4mm×102mm×1.63mm (w×l×h) with the variation done in overlap length. Aluminium as the adherend and epoxy resin loaded with the nano size Al2O3 and fumed silica powder as fillers have been used for the preparation of joint specimen. Pre-bond surface treatment of the aluminium substrate was performed in accordance with the procedure as provided by IS 13199:1991.Guidelines for bonded joint preparation and test as per ASTM D1002-99 has been followed. The mechanical properties of the geometrically bonded specimen have been determined under tension loading by Instron1195 UTM at room temperature with testing speed as per standards. The study is focussed on the effect of the overlap length and additives on the joint tensile strength. Adhesive characteristics as well as adherend properties influence the limit strength of the joint that would be obtained. The results are useful in the design of the composites when looking for the specific joint strengths.

Keywords: Single Lap Joint, Epoxy Resin, Engineering Properties, Fillers, Aluminium Substrate, Instron1195 UTM.

DOI: https://doi.org/10.15623/ijret.2017.0605008