Investigation of bonded joints in glass fiber reinforced flat profiles

Szabó, Valentin Endre and Vaczkó, Dániel (2023) Investigation of bonded joints in glass fiber reinforced flat profiles. ACTA MATERIALIA TRANSYLVANICA (EN), 6 (1). pp. 59-63. ISSN 2601-8799

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Abstract

Nowadays, raw material shortage is a characteristic problem that affects every sector of the industry. Composite materials reinforced with fiberglass, manufactured through the pultrusion process, have extremely favorable properties. In our research, we examined the application of surface treatments on pultruded profiles to enhance surface energy. We roughened the surfaces to be bonded using manual sanding and sandblasting techniques, and then performed wetting measurements using various degreasing agents. To demonstrate the occurrence of surface treatment and determine its magnitude, we inspected the surfaces with a roughness tester. The bonds were created using two different structural adhesives as well as epoxy resin. The shear strength values of the flat profiles were compared through tensile tests, and the effects of the surface treatments were determined. Based on the results, the appropriate surface treatment and adhesive type greatly influence the developed bond strength.

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