STRESS ANALYSES OF FIBERMATRIX INTERFACE AND INTERFACE FAILURE

General mechanical properties of fibermatrix interface are analyzed by adopting the singlefiber pullout test and the question of interface failure is studied further. Basic equations are established of solving interfacial deformation problems of the fiber and matrix. The general expression of interfacial shear stress is led out. And interfacial failure criterion is set up. This result can reasonably explain the test results in other papers.