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Bonding of Aluminum Sheet and Mechanical Evaluation
Published July 02, 1997 by Associazione Tecnica Dell'Automobile in Italy
To decrease the fuel consumption of the vehicles, one of the most efficient methods is to reduce their weight. Aluminum is a promising material to achieve this goal. The main problem to be solved concerns the industrial manufacturing of the aluminum cars, especially the joining aspects.
The paper reports the main results of the studies carried out in the BRITE Project, "Low Weight Vehicle' (Manufacturing Aspect of Body Structures-MABS).
Four aluminum alloys and adhesives were evaluated for different adhesive gaps, surface texture and treatments.
The static and impact behavior, using simple specimens, was assessed and general rules for the bonding aluminum parts were defined.
The technical activities performed confirm that the aluminum alloy can be bonded with conventional adhesives, the mechanical properties of the bonded joints are good and convenient for the automotive applications.
The adhesive formulation plays an important role just like as the allowance (gap) in the joints