Abstract: A kind of carbon fiber reinforced foam without panels for the hybrid octet lattice was designed and the fabrication technology of the hybrid octet lattice was introduced. The compressive strength and compressive modulus of carbon fiber skeleton reinforced hybrid composite were obtained from experimental test and theoretical analysis. The results show that the compressive strength and modulus of carbon fiber skeleton reinforced hybrid composite decrease significantly by boundary effect. The measured compressive strength is between the theoretical maximum and minimum, and the compressive modulus is even lower than the minimum. Compared with other types of carbon fiber-foam composite structures, carbon fiber skeleton reinforced hybrid composite have certain advantages in compressive strength and compressive modulus. Carbon fiber skeleton reinforced hybrid composite has the following advantages including nearly isotropic mechanical properties, and lower density than water and corrosion resistance. It has wide application prospects in the field of navigation.

Key words: carbon fiber, syntactic foam, octet lattice, composite material, mechanical properties