Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
EXPERIMENTS ON SINGLE LAP JOINTS MADE OF NATURAL FIBRE REINFORCED COMPOSITES
Submission Author:
HENRIQUE FERNANDES MEDEIROS DE QUEIROZ , RJ , Brazil
Co-Authors:
HENRIQUE FERNANDES MEDEIROS DE QUEIROZ, DANIEL KIOSHI CAVALCANTI, DOINA BANEA
Presenter: HENRIQUE FERNANDES MEDEIROS DE QUEIROZ
doi://10.26678/ABCM.COBEM2019.COB2019-0660
Abstract
In this paper, similar and dissimilar adhesive joins of synthetic and natural fibre-reinforced polymer composites were investigated experimentally. Several important factors, such as adhesive type and adherend stiffness, influencing the strengths of the adhesive joints were investigated. The composite substrates were manufactured by hand lay-up technique of fibre mats following a 30/70% volume of fibre/matrix. The resin used was a brittle two component epoxy. All studied groups were fabricated with two distinct adhesive systems with different properties. One was the Betamate 2096 structural adhesive and the other was the AR 260 Epoxy Resin system that was also used in the manufacture of the composite substrates themselves. The bondline thickness was 0.2 mm. The following single lap joints were fabricated: Purely natural Sisal and Jute joints; Sisal/Glassfibre, Jute/Glassfibre reinforced joints, both similar and dissimilar joints with GFRP purely synthetic composites; and finally, purely similar synthetic joints of GFRP. The bonded joints were subjected to tensile tests in a universal testing machine at 1mm/min. The results were compared in order to assess the feasibility of the natural fibre reinforced composites (NFRCs) in the transportation industry. It was found that the reinforced Jute composite presents a better performance than the Sisal ones for both adhesives and the Jute/Glassfibre composite joints reached nearly 80% of the pure synthetic (GFRP) composite joints.
Keywords
Composites, Adhesives, NATURAL FIBRES, single-lap joints
