The effect of internal interfaces on the failure waves in a filled glass is examined with the damage levels in the interfaces. The passage of the main shock over the interface immediately triggers a failure wave. Damage levels do not seem to have any effect on the time this reinitiation process takes, in contrast to soda-lime glass where increasing levels of damage causes a progressive increase in failure wave initiation at the interface, and borosilicate, where failure is not re-initiated at the interface at all. Lateral stresses and shear strengths are also examined ahead of and behind the interface.
Millett, J., & Bourne, N. (2000). Effect of an internal interface on the shear strength of a shock-loaded, high density glass. Scripta Materialia, 43(1), 77–82. https://doi.org/10.1016/S1359-6462(00)00369-9