Abstract
In this work, alumina nanoparticles at various concentrations were used to modify the epoxy system to develop the composites along with unidirectional (UD) glass-fibers. In order to understand the influence of alumina nanoparticles over the directional compressive properties, tests were performed along longitudinal and transverse directions of the laminate using a universal testing machine. To generate the base line data the laminates with the unmodified matrix are also tested. The maximum enhancement of compressive properties were seen in the composite having 1.0wt% of alumina nanoparticles. The compressive modulus and compressive strength was found to be 17.76% and 19.43% in the transverse direction where as it found to be 2.89% and 3.44% in the longitudinal direction respectively. Results of the present study showed that glass-fiber reinforced nano-modified polymers (GFRP) exhibit significantly improved compressive properties such as compressive strength and compressive modulus along the transverse direction while the properties along the longitudinal direction were not affected much by the nano-fillers, due to the dominating effect of the fiber-reinforcement. The graphs and figures are employed to explain the results.
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