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The influence of the impact energy on the impact damage of the carbon fiber fabric reinforced epoxy composites laminates was investigated. Impact tests on the carbon/epoxy composite laminates with the size of 600 mm×700 mm were conducted with different the impact energy levels from 5 J to 65 J at the room temperature, respectively. After the impact test, the impact crater depth and the matrix length was measured on the tested specimens. The calipers and three-dimensional microscope was used to characterize the damage after impact tests. The experimental results show that the impact damage tends to be more severe as impact energy increases. The crack length of the carbon/epoxy composite laminates increases linearly with the increasing impact energy.

Research on the Damage Assessment of Carbon/Epoxy Composite Laminates at Different Impact Energy