Effect of internal strain on the propagation of failure in shock loaded soda-lime glass

Abstract

Failure wave propagation in shocked soda-lime glass has been investigated as a function of internal strain. This has been varied by either examining the material in the as-received or a heat-treated state. Results show that while material strength does not seem to be significantly effected, failure wave velocity is reduced by an annealing treatment. Annealing has been shown to reduce the amount of internal strain, and thus the amount of available energy for crack propagation is likewise reduced.