This study, based on previous works on cumulative damage models, concerns a glass plate subjected to impact at different loading rates using a compression split Hopkinson pressure bar and the normalized drop ball test. In order to evaluate the damage development and the fragmentation, a damage model that is characterized by the damage volume affected by impact as function of the impact duration and the critical stress is proposed. The degree of damage is, therefore, predicted by the severity of dynamic contact between the projectile and the target. The multi-activation of micro-defects depends on the normalized contact volume. The performation of the glass plate occurs at a level of stress which is many times higher than the static strength.
