Compressive properties of open-cell ceramic foams
(1.College of Civil Engineering and Mechanics, Xiangtan University, Xiangtan 411105, China2.Post doctor Station of Mechanics, Hunan University, Changsha 410082, China3.China Machinery Interntional Engineering Desing and Research Institute, Changsha 410007, China)
Abstract: The compressive experiments of two kinds of ceramic foams were completed. The results show that the behavior of ceramic foams made by organic filling method is anisotropic. The stress-strain responses of ceramic foams made by sponge-replication show isotropy and strain rate dependence. The struts brittle breaking of net structure of this ceramic foam arises at the weakest defects of framework or at the part of framework, which causes the initiation and expanding of cracks. The compressive strength of ceramic foam is dependent on the strut size and relative density of foams.
Key words: ceramic foam; stress-strain curves; elastic properties; compressive experiment