Adhesive bonding is a promising joining technique in modern transport industries which provides for lightweight connection of dissimilar materials. However, available adhesive types have reached their limits in terms of durability and strength. A potential solution to this problem is the utilization of mixed adhesives. However, the influence of the surface preparation method on the performance of mixed adhesive joints has not been investigated thoroughly yet. The objective of this study is therefore to analyze such influence on the strength of mixed adhesive single lap joints. In this regard, five mechanical surface treatment methods were examined on aluminium alloy AA6082 using combinations of three different types of adhesives by means of static tensile tests. The results show significant increase in joint strength and ductility for DP 8005-AV138 compared to AV138 alone for sanding surface preparation. The roughness value in the range of Ra=1.7 to 3.1μm and Rm=36.5 to 44.60μm provide the highest shear strength.
Influence of mechanical surface treatment on the strength of mixed adhesive joint / N. S., Hirulkar; P. R., Jaiswal; Pirondi, Alessandro; Loucas, Papadakis. - In: MATERIALS TODAY: PROCEEDINGS. - ISSN 2214-7853. - 5:(2018), pp. 18776-18788. (Intervento presentato al convegno 8th International Conference on Materials Processing and Characterization, ICMPC 2018 tenutosi a ind nel 2018) [10.1016/j.matpr.2018.06.224].
Influence of mechanical surface treatment on the strength of mixed adhesive joint
Alessandro, Pirondi;
2018-01-01
Abstract
Adhesive bonding is a promising joining technique in modern transport industries which provides for lightweight connection of dissimilar materials. However, available adhesive types have reached their limits in terms of durability and strength. A potential solution to this problem is the utilization of mixed adhesives. However, the influence of the surface preparation method on the performance of mixed adhesive joints has not been investigated thoroughly yet. The objective of this study is therefore to analyze such influence on the strength of mixed adhesive single lap joints. In this regard, five mechanical surface treatment methods were examined on aluminium alloy AA6082 using combinations of three different types of adhesives by means of static tensile tests. The results show significant increase in joint strength and ductility for DP 8005-AV138 compared to AV138 alone for sanding surface preparation. The roughness value in the range of Ra=1.7 to 3.1μm and Rm=36.5 to 44.60μm provide the highest shear strength.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
