The dynamic response of soda-lime glass

Abstract

This paper reviews recent results concerning the dynamic response of soda-lime glass to planar shock wave loading. These studies utilised a range of experimental techniques: high-speed photography, stress histories with embedded gauges and direct measurements of strain behind the various wave fronts propagating in the glass. It was found that soda-lime glass showed a ramping behaviour when shock loaded in the elastic 0–4 GPa range, whilst its response was complex in the transformation region up to the 6 GPa value of the Hugoniot elastic limit (HEL). Beyond 6 GPa the material behaved in a plastic manner. The principal feature of the transformation region was the appearance of the failure wave. This front, following the elastic shock waves in the glass, was visualised, and strain gauge measurements indicated that an additional compaction was taking place behind it. Interpretation of these results suggests the failure wave to be the locus of cracked material that has undergone a densification behind the shock front.This paper reviews recent results concerning the dynamic response of soda-lime glass to planar shock wave loading. These studies utilised a range of experimental techniques: high-speed photography, stress histories with embedded gauges and direct measurements of strain behind the various wave fronts propagating in the glass. It was found that soda-lime glass showed a ramping behaviour when shock loaded in the elastic 0–4 GPa range, whilst its response was complex in the transformation region up to the 6 GPa value of the Hugoniot elastic limit (HEL). Beyond 6 GPa the material behaved in a plastic manner. The principal feature of the transformation region was the appearance of the failure wave. This front, following the elastic shock waves in the glass, was visualised, and strain gauge measurements indicated that an additional compaction was taking place behind it. Interpretation of these results suggests the failure wave to be the locus of cracked material that has undergone a densification behind the shoc...