Carbon short fibers reinforced polymer composites are commonly used composite materials in automotive and aerospace industries. In the present work, nickel coated carbon polyacrylonitrile (PAN)-based carbon fibers/epoxy manufactured by open molding method were studied. Also, nickel coated carbon fiber /epoxy composites with aluminium oxide nano filler were evaluated. Addition of small proportions of 100 nm size Al2O3 fillers significantly enhanced the mechanical properties of polymer matrix composites. In nickel coated carbon fiber /epoxy composites the Al2O3 nano fillers were added with different weight percentage varied from zero to six percent in steps of two percent. All the tests were conducted according to ASTM standards. The results revealed that Al2O3 nano fillers reinforced composites exhibited enhanced mechanical properties such as tensile strength, impact strength and fracture toughness.

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