SHOCK RESPONSE OF SODA LIME GLASS AT 6 GPa

This paper describes the results of a variety of shock wave experiments performed on soda lime glass to understand the modifying influence of so called "Failure wave" on its compression, under single shock, release, and tension. These experiments were done to a peak shock induced stress of around 6-7 GPa. Shock induced response was recorded by means of VISAR. The results of these experiments performed on soda lime glass at 6-7 GPa indicate that: (i) The effect of failure wave propagation is to lower the impedances of failed glass under both shocked compressed and released states and the effect is not initiated instantaneously at the impact surface. (ii) Failure wave velocity is determined to be 1.42 km/s. (iii) The spall strength of soda lime glass in the region transversed by failure wave is not negligible i. e., the pull-back velocity is around 50 m/s.