In the very near future, new materials will be introduced extensively in the manufacture of automobile body and structural components. Adhesive bonding of the resulting mixed material structure is probably the most readily applicable, efficient and cost effective method of assembly. However, the reliability of such automobiles will, to a large extent, depend on the long-term durability of the adhesive bonds. A realistic durability test is needed in order to control production quality, to improve the adhesives, to check that a product fulfills the requirements and to estimate the life duration of the bond. A weathering test has been developed, based on the use of lap shear and wedge samples; the degradation observed in the laboratory was compared with the degradation observed in the field. Some important conditions for obtaining correlation between field an laboratory tests were identified. In particular, the severe effect of salt spray on adhesive bonds was noted.
Durability testing of adhesives for automotive applications
Dauerpruefung von Klebstoffen fuer den Automobilbau
1987
8 Seiten, 6 Bilder
Conference paper
English
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