Effects of Mode Mixity on the Failure Mechanism of Aged Adhesive Joints

Abstract

The strength and the performance of adhesive joints can be significantly influenced by the ageing procedure. However, the role of aging in the failure mechanism of adhesive joints as a function of loading conditions has not been studied yet. The current research aims to investigate the effect of mode mixity on the failure mechanism of aged adhesive joints using Arcan samples. Based on the results loading the tested joints in shear led to a higher percentage of interfacial failure than in tensile. However, it was also found that the shear loading mode is less sensitive (compared to tensile loading) to the ageing conditions.

The role of loading mode on the property degradation of adhesives at high temperatures

“…[10][11][12] Despite its benefits, the use of adhesives has some important drawbacks, being one of the most important high sensitivity to severe environmental conditions. Many authors have studied the effects of different environmental and loading conditions such as temperature, [13][14][15] ageing, [16][17][18] and fatigue [19][20][21][22] on the mechanical performance of bonded joints. The effect of temperature on adhesive joints is a relevant research topic since service temperatures are in practice often below or above the standard room conditions.…”