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This research work evaluates the effect of barium sulphate contents on the physical, mechanical, dynamic mechanical, and erosion wear properties of fixed glass fiber reinforced epoxy composites. Composites with 0 to 30 wt% barium sulphate were prepared by vacuum assisted resin transfer molding (VARTM) technique under controlled pressure condition. The manufactured composites were characterized for physical (density, void content, and hardness), mechanical (tensile, flexural, and inter‐laminar shear strengths), dynamic mechanical, and erosion wear properties including numerical and experimental analysis. Experimental results show that the addition of increased barium sulphate content results in increased density, void content, hardness, interlaminar shear strength, and fracture toughness of the composites, while tensile and flexural properties were found to decrease above 10 wt% barium sulphate content. Erosion results revealed that the maximum wear rate was found between the ranges of 45° to 75° impingement angle, which shows semi‐ductile nature of the composites. Moreover, computational fluid dynamic (CFD simulation by ANSYS fluent) analysis was introduced to calculate the erosive wear rate, erosion scar, and then tracking the particle trajectories in order to validate the numerical results by comparing the obtained experimental results for validation. Finally, the erosion efficiency was calculated as a function of impact velocity of the proposed particulate filled composites and eroded samples were analyzed through scanning electron microscope to observe the wear characteristics of the composites.

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In the present study, needle-punch nonwoven jute fiber reinforced epoxy composites are fabricated by compression molding techniques by varying alumina ceramic particulates (0-15 wt%) in the composites. The physical tests are studied such as void content, hardness, and water absorption analysis and mechanical tests are performed such as: tensile strength, impact strength, and fracture toughness, respectively. The results indicated that with the addition of 5 wt% of alumina particulate to the unfilled needle-punch nonwoven jute epoxy composite is increased the hardness by 13.15%, tensile strength by 30%, flexural strength by 20%, and impact strength by 9.01%, respectively. Finally, thermo-mechanical test such as dynamic mechanical analysis, thermo-gravimetric analysis, and thermal conductivity analysis of the unfilled and particulate filled polymer composites are characterized. The thermal conductivity of the unfilled composite is decreased by 3.01% by the addition of 5 wt% of alumina particulate. Further, it is also observed that jute reinforced epoxy composites filled with 15 wt% alumina particulate presented highest storage modulus, loss modulus, and thermal stability as compared with 0 wt%, 5 wt%, and 10 wt% alumina particulate filled jute epoxy composite. POLYM. COMPOS., 39:1553-1561, 2018.

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