SHPB dynamic compression test of Al₂O₃ ceramics under constant strain rates

Split Hopkinson pressure bar(SHPB) dynamic compression tests were conducted for Al₂O₃ ceramics by employing the novel pulse shaping technique. Expected incident pulse was obtained through reasonable design of the pulse shaper size and the initial velocity of striker bar. It is shown that the pulse shaping technique is fairly available to study the dynamic behavior of brittle materials under the condition of constant strain rates; and such technique combined with direct measurement of sample strain can be used to measure stress-strain curve of high-strength brittle materials correctly under the condition of high strain rates.