Comparative Study on Tensile Deformation and Micro Damage Mechanisms of Resin Based and Ceramic Based Composite Materials
The microstructure of two composite materials was characterized by SEM,and the similarities and differences in the microstructure of the two composite materials were compared and analyzed. By combining the stress-strain curve of the tensile test with the fracture morphology of the failed specimen,the damage behavior and fracture mechanism during the tensile process of CFRP composite materials and 2D C/SiC composite materials were analyzed. The research has shown that 2D C/SiC materials have a PyC interface layer,and there are three types of defects with random distribution inside. However,resin based composite materials do not have clear boundaries,and the internal fibers of the material are tightly arranged without obvious defects. The tensile deformation process of two materials involves three damage stages. There are three types of damage modes in 2D C/SiC materials,include matrix cracking,interface debonding,and fiber fracture. The damage modes of resin based composite materials are divided into five types,include matrix cracking,fiber matrix interface debonding,delamination,fiber bundle pulling,and fiber fracture.
万方数据
维普
