SCALE-MODEL EXPERIMENTS WITH CERAMIC LAMINATE TARGETS

Ballistic impact experiments were performed on ceramic laminate target s at three scale sizes, nominally 1/3, 1/6, and 1/12, to quantify the effects of scale on various responses, in particular, the ballistic li mit velocity. The experiments were carefully designed and controlled s o that the different scale sizes were high fidelity replicas of each o ther. A variety of responses, such as residual projectile quantities, hole size, and the extent of bulging, were measured. Some of the measu red quantities showed little or no dependence on scale size, whereas o ther quantities, particularly the ballistic limit velocity, were found to vary with scale size. The percentage difference was quantified, an d the results extrapolated to estimate full-scale response from the su bscale tests.