Damage Characteristics of 2D C/SiC-ZrC Composites under Low Velocity Impact

The effects of impact energy on damage characteristics and tensile properties of 2D C/SiC-ZrC composites were studied by low-speed impact, post-impact tensile tests and the CT scanning methods.The results indicated that C/SiC-ZrC composites had a high impact damage tolerance.The damage state of the composites in the energy range of 15-24 J was mainly shown as penetrating damage.When the impact energy increased within the range of 15-24 J, the nominal tensile strength of C/SiC-ZrC composites reduced slowly, with a maximum decrease of around 25%.The impact mainly caused lamination and fiber fracture damage near the impact areas.However, the impact damage was not observed out of the impact areas.