Crack and Shock Propagation Through the Interlayer in Soda Lime Glass Under Detonation Loading

Abstract

Dynamic wave interaction and crack propagation in glass have been observed with the edge-on impact (EOI) style test method using an exploding bridged wire (EBW) detonator. The existence of an interlayer or internal surface displayed meaningful wave distortions, delays, reflections, and decreasing amplitude. The interlayer materials used were rubber, stainless steel, and cut surface. The results indicate that the shocks passing the interlayer decrease following the impedance condition and that much of the crack is stopped at the interlayer. The damage pattern was analyzed with the energy and stress dissipation rate. *dkkim@kaist.ac.kr Fig. 8. Analysis of interlayered specimen. (a) Selected high-speed photographs of the glass laminate with stainless steel interlayer. (b) Fracture and wave propagation with time sequence.www.ceramics.org/IJAGS

Unprecedented hardness of polycrystalline diamond via laser surface engineering

“…Where Z is the reduced impedance, α the efficiency of the operation, 𝑍𝑍 1 the acoustic impedance of the target material; and 𝑍𝑍 2 the acoustic impedance of the confining medium. The acoustic impedance of soda-lime glass is 1.4 × 10 6 g/cm 2 s [24] and that of quartz glass is 1.31 × 10 6 g/cm 2 s [6]. Laser process parameters used for the final design of experiments and calculated parameters such as fluence, energy density and the peak pressure are shown in Table 2.…”