Mechanical properties of carbon/silicon carbide composites materials bolts

With the extensive use of carbon/silicon carbide composite materials(C/SiC) in aerospace fields, the bolting of C/SiC materials is important in structure of aircraft and spacecraft. However, there is a problem of the heat matching with the use of metal bolts. Now it can be solved by the development of C/SiC bolts. The C/SiC bolts were prepared by chemical vapor infiltration (CVI). The carbon fabric preform was fabricated with the three dimension needling method. The mechanical properties of C/SiC bolts were investigated. The results indicated that the average tensile strength of C/SiC bolts was 114.71 MPa and the average shear strength of C/SiC bolts was 71.34 MPa. These results are helpful for the design of C/SiC materials bolting in Aerospace Structures.