Glasses Tech

September 22, 2009

High-speed photography of compressive failure waves in glasses

Filed under: Glasses 1995 — admin @ 4:57 am

Eyeglasses

A mechanism for the compressive failure of soda-lime and borosilicate glasses is propose dbasedupon hgih-speed hotography of impact on glasses. Shock loading was produced by the impact of a 50 mm diameter projectile so inducing shock states of one-dimensional strain in glass targets. The shock waves and fialure frontswere visualised using the shadowgraph techniqeu. The fialure appeared to occur atdiscrete nucleaiton sites and propagated out to form a continuous front. The velocity of this fornt increased with hgiehr impact stresses and varied with the glass composition.

Bourne, N. K. Rosenberg, Z.  

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