EXPERIMENTAL INVESTIGATION OF MICROMECHANICAL BEHAVIOR OF ADVANCED MATERIALS BY MOIRE INTERFEROMETRY

Several typical instances show that moire interferometry is an effecti ve experimental method for micromechanics study of advanced materials. By using moire interferometry, stress-induced martensitic transformat ion plastic zone in ceria-stabilized tetragonal zirconia polycrystalli ne ceramics (Ce-TZP) is studied. The experimental results show that th e stress-induced transformation at room temperature is not uniform wit hin the transformation zone and the phenomenon of microscopic plastic flow localization for transformation is revealed. Meanwhile, the exper imental investigation of the pseudoelasticity behavior of Cu-Zn-Al pol ycrystalline shape memory alloy and bending behavior of carbon-fiber a luminium laminates (CALL) are reported. The experiments reveal some im portant features of the deformation processes of the materials. Finall y, the measuring ability of moire interferometry for micromechanics st udy is discussed.