Adhesively-bonded joints

What is it about?

There is at present considerable incentive for aerospace and automotive manufacturers to minimize energy consumption. One of the main ways in which fuel consumption can be reduced is to decrease the weight of the vehicles. For such sectors, this has led to the replacement of spot welded steel body structures by light-weight constructions using adhesive bonding. Such items as roofs, doors, bonnets, boot lid etc. have been adhesively bonded for several years, and more structural components are being considered. In aerospace applications, adhesive bonding can be used for joining metals, plastics or combinations of the two, and it offers the further advantage that, because the joints are continuous, an overall increase in body stiffness is achieved, thus enabling thinner material to be used . Performance of adhesively-bonded joints of layered composites is investigated in this study.

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Why is it important?

We observed firstly bending effects started overwhelming shear effects when the overlap length was increased on the adhesive layer in the tensile loading case; secondly in three point bending loading case, failure started from tension side of the adhesive layer. It was also noted that the maximum load obtained from different loading modes was decreasing when the ply angle for the adherend was decreased.

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