Author/Authors :
Li، نويسنده , , Tiezheng and Grignon، نويسنده , , Janette F. and Benson Jr.، نويسنده , , D.J. and Vecchio، نويسنده , , K.S. and Olevsky، نويسنده , , E.A. and Jiang، نويسنده , , Fengchun and Rohatgi، نويسنده , , A. and Schwarz، نويسنده , , R.B. and Meyers، نويسنده , , M.A.، نويسنده ,
Abstract :
The mechanical performance of Ti–Al3Ti metal–intermetallic laminate (MIL) composites synthesized by a reactive foil sintering technique was evaluated. The elastic properties and anisotropy of the laminates were calculated and successfully compared with resonant ultrasonic spectroscopy (RUS) measurements. The effect of internal stresses due to differences in the thermal expansion coefficient on fracture toughness was analyzed. The principal mechanisms of damage initiation and accumulation were identified experimentally. The compressive strength was modeled by FEM using the Johnson–Holmquist constitutive equation. The computed results were successfully compared with experiments.
Keywords :
laminate composites , mechanical performance , damage evolution , FEM modeling
