Abstract
One-layer, two-layer, and three-layer aramid fiber/glass fiber hybrid composites were fabricated to investigate the impact behavior of thin composites using the analysis of delamination area. The effect of stacking sequence and surface treatment on the delamination area of hybrid composites was examined by using penetrant injection and de-plying technique. The impact energy and delamination area of the laminates depended on impact characteristics of fiber at impacted surface. When aramid layer was at impacted surface, the laminate exhibited the higher impact energy and delamination area. The surface-treated composites exhibited the reduced delamination area due to the restriction in deformation of aramid fiber. The impact behavior of three-layer hybrid composites was affected by the delamination area at each interface. The deformation of neighboring aramid layer increased the deformation at adjacent interface.
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