Abstract
A study was made of the fatigue behavior of three types of 2024-T3 aluminum-alloy adhesive-bonded joints: single-lap joint, scarf joint and butt joint bonded with two kinds of adhesives, a vinyl-phenolic type, FM-47 and a nitride rubber-phenolic type, Metlbond 4021. Two different modes of fatigue failures of the single-lap joints, i.e., sheet-metal failure and adhesive-bonding failure, were caused by the different stress components in the joint. The influence of the variations of stress distribution caused by the difference in mechanical properties of the adhesive, geometry of the joints, and the type of loading on fatigue strength of the adhesive-bonded joints, were analyzed.
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