Estimation of the Dynamic Properties of Epoxy Glass Fabric Composites with Natural Rubber Particle Inclusions

Abstract

Conventional materials are being replaced in the field of engineering by composite materials, due to their tailorable properties and high specific properties. These materials are extensively used in structural applications. Damping is one of the important properties of the materials used in structures, and needs to be enhanced in order to reduce structural vibrations. In the present work, the improvement of the material damping of glass fabric epoxy composites with particle rubber inclusions is studied. The effect of particle size on the damping and stiffness parameters at different frequencies and temperatures is studied experimentally. Considerable enhancement in damping without significant reduction in stiffness is observed at lower particle sizes. The damping property in both bending and shear modes is more with 0.254 mm rubber particle inclusions among the selected sizes. A lower reduction in stiffness is observed with the inclusion of lower particle sizes (0.254 mm and 0.09 mm) when compared with higher particle sizes. An ANN-based prediction model is developed to predict these properties for a given frequency/temperature and particle size. The predicted values are very close to the experimental values with an maximum error of 5%.

Effect of sodium hydroxide on the tensile properties of sugar palm fibre reinforced thermoplastic polyurethane composites

“…Natural fibrereinforced plastics are gaining more attention from researchers and industry due to their cost-effectiveness, lighter weight, lower abrasion of equipment and renewability, among the several benefits of natural fibre composites [10][11][12]. For these reasons, in construction and the furniture, automotive and packaging industries, materials like sugar palm fibre are now used [7,[13][14][15][16]. Sugar palm fibre (SPF) is a potential source of natural fibre from Arenga pinnata, a member of the Palmae family.…”

Mechanical properties of bamboo reinforced epoxy sandwich structure composites

“…The implementation of these natural fibres in such composites is beginning to increase rapidly, especially in the automotive, building construction and marine industries [1][2][3][4]. Hence, a number of studies on natural fibre reinforced composites have been accomplished in order to study their mechanical properties and eventually apply them in engineering applications, replacing synthetic fibres [5][6][7]. This is because most natural fibres require less energy and lower handling costs, besides possessing excellent strength and stiffness as well as desirable environmental values like being renewable, biodegradable and sustainable compared to glass and carbon fibres [8][9][10][11].…”

Low-velocity impact responses of Napier fibre/polyester composites

“…Due to their low density, light weight, and economical material cost, cellulose fibre strengthened composites have an incredible potential for utilisation in designing applications [5,6]. A developing ecological mindfulness around the world has raised interest in innovative work on ecologically friendly and manageable materials [7][8][9][10][11]. Characteristic plant-based fibres are utilised as reinforcement for composite materials and provide different advantages contrasted with synthetic fibre.…”