Experimental study of the effect of microspheres and milled glass in the adhesive on the mechanical adhesion of single lap joints

ABSTRACT

This article describes several experiments conducted on single lap joints (SLJ) subjected to tensile mechanical loads. Two epoxy adhesives, with slow and fast curing, were used, with a weight of 0%, 3%, and 10% of glass microspheres and milled glass particles, respectively. The adherends used in the construction of the specimens were fiber-reinforced polymers. The types of failures produced in the SLJ specimens were classified according to ASTM standards. The results of the experimental tests on the SLJ with fast-curing epoxy adhesive showed that the use of milled glass and glass microspheres improved the strength of the joint compared with the neat fast-curing epoxy adhesive. As for the experimental test on the joint with slow-curing epoxy adhesive, the results showed that the use of milled glass and glass microspheres decreased its strength when using different additive concentrations compared with the neat slow-curing epoxy adhesive.

KEYWORDS:

• Composite adherend
• glass microspheres
• milled glass
• single lap joints

Funding

The authors acknowledge the funding of this work by the Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT) project, number 1131058.

Additional information

Funding

The authors acknowledge the funding of this work by the Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT) project, number 1131058.