Abstract
Direct laminar shear test of C/C composite was conducted using a new developed test machine which can change compressive load on test specimens with four kinds of width. The relation between laminar shear strength and specimen width showed the independence of specimen width. The relation between laminar shear strength and compressive stress (0〜20MPa) showed nearly Quadratic equation behavior and original laminar shear strength in the condition of no compressive stress would be estimated.
