Transformation of shock compression pulses in glass due to the failure wave phenomena

Abstract

A method of observing the compressive failure waves in glass is presented. Its advantages are good reproducibility of the recorded data and capabilities of measuring, the kinematic parameters of the failure wave and determining by one shot the failure threshold. The experiments presented herein confirm that the network of growing cracks in shock-compressed glass may indeed be considered as a failure wave with a small stress increment. Transformation was observed of the elastic compression wave followed by the failure wave in a thick glass plate into a typical two-wave configuration in a pad of thin glass plates.

Origin of compression-induced failure in brittle solids under shock loading

“…Our U s -u p data for PMMA shown Consistent with previous experiments 16 , U f increases with increasing u p [ Fig. 3(b)], and can be described with…”

“…The flyer plates are made of oxygen-free high purity Cu, and the samples, optical-quality 7,16 . We also perform validation shots with the adhesive layer parallel to the loading direction, and observe that deformation of the particle layer is indistinguishable from that of its surroundings and has little influence on the propagation of the shock and failure waves.…”

A Study on the Feasibility of Creating a Web-Accessible Marine Mammal Sound Library Based upon the Collections at the Woods Hole Oceanographic Institution

“…This was observed in projectile impact studies (see above), and also in plate impacts. It appears that FWs are generated from interfaces, as in figure 59, taken from Kanel et al (2002). In these experiments, as the shock wave crossed each interface, FWs were generated that propagated both in the forward direction, following the shock, and in the backward direction.…”

“…Figure 59. Diagram for copper striking glass layers, where E represents shocks, the double lines are release waves from closing the small gap between layers, and the FWs are generated at interfaces (Kanel et al, 2002).…”

Failure Fronts in Brittle Materials and Their Morphological Instabilities

“…These three pillars grow simultaneously and in close interaction with each other. The experimenters find an analogy of such waves with solid-solid phase transformation fronts (13) or with fronts of slow combustion (14). These two analogies are not antagonistic.…”