Research on damping performance of elastomer/carbon fiber epoxy composite

Abstract The preparation method of the composite material with damping layer and the influence of the position of the single-layer damping layer in the composite material on the damping coefficient have not been studied in detail. In this paper, the most commonly used composite molding methods, the hot autoclave and hot patch method, to manufacture elastomer/carbon fiber reinforced epoxy resin (elastomer/CFER) composites. Then, the effects of the manufacturing method and the position of the elastomer on the short beam shear strength and damping performance of the co-cured composite were studied. The novel results show that the composite manufactured by the hot autoclave has high shear strength, but the damping factor of the composite is relatively weak. The addition of the damping layer has little effect on the shear strength of the composites of the hot patch instrument, and the damping factor of the composites with an elastic layer in the middle can reach 0.0683, which is 4.1 times that of the composites without the damping layer, and 2.5 times of the composites with an elastic layer in the middle of the hot autoclave manufacturing.