An SHPB set-up with reduced time-shift and pressure bar length

A modification of split Hopkinson pressure bar (SHPB) set-up based on wave separation technique is proposed in the present paper, which may be used to reduce the time-shifting distance and the pressure bar length in an SHPB test. Incident and reflected strains are separated through two-point strain measurement and the associated iterative formulas. A general error analysis is conducted for the iterative algorithm. The proposed modification of SHPB set-up is examined by using both FE-based numerical simulation and actual SHPB test.