Technical and economic evaluation of adhesive, screwed and hybrid joints for bonding metallic materials in industrial applications

摘要

Currently, in many industrial sectors are used assembling systems based on adhesive joints. However, in critical industrial applications, where the safety and health of persons are compromised, the additional guarantee of adequate reliability in the resistance and tolerance to the damage of the joint is needed. In these cases, a solution that combines mechanical assembly and adhesives is usually considered (hybrid joints). The choice of one or another assembly system (adhesion, mechanical or hybrid) is a complex decision. Therefore, the objective of the present work is to propose a methodology for the evaluation and selection of assembly system of the joint that best combines mechanical performance, adequacy to the manufacturing process and manufacturing cost. For this objective, we use a methodology that combines experimental analysis (for the determination of bond strength) together with a multi-criteria decision tool, such as "Value Analysis" to select alternative that provides the best "performance/cost" ratio.