DYNAMIC BEHAVIOR OF A SHOCK-LOADED GLASS-CERAMIC BASED ON THE LI2O-AL2O3-SIO2 SYSTEM

The dynamic behavior of the Robax glass-ceramic based on the Li2O-Al2O 3-SiO2 system has been investigated. The experiments were performed us ing the planar impact technique in combination with a VISAR interferom eter. From the velocity-time profiles the Hugoniot elastic limit sigma (HEL), spall strength sigma(sp) and strains epsilon have been calculat ed. The results are plotted in U-s-u(p), sigma(max)-epsilon and sigma( sp)-sigma(max) diagrams and fitted with linear relations. At stresses above 9 GPa the existence of a failure wave in the glass-ceramic is ob served.