Experimental Investigation of the Peel Strength and Peel Stress Distribution of Aluminum Steel Galvanized Foil Laminate

Experimental investigation of the Peel Strength and Peel Stress distribution of Aluminum-Steel (Galvanized foil) Laminate is reported. Due to the need for continued improvement in weight reduction in aircrafts in the Aircraft industry; choice of corrosion-free materials in the Food/Beverages and Medical industries, attention has been focused on choice of appropriate materials that combine strength, light weight and corrosion/rust-free properties. Aluminum and Steel hybrid appears to satisfy the orchestrated properties above. Consequent on the foregoing Aluminum – steel (Galvanized foil) laminate bonds were prepared using Araldite Rapid (an Epoxy Adhesive) as the bonding agent. The specimens were subjected to Peel Test on the Mosanto Tensometer. Outcome of investigation revealed that a mode of failure was by the Steel foil simply peeling off the Aluminum piece along the bond film; much strength was needed to initiate the peel, after which little strength was needed per elongation and that the ends of the laminate carried 63.8% of the total load.