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Updated: Jan 28, 2026

Blast Quantification Using Hopkinson Pressure Bars
Published on: July 5, 2016
A miniature multi-pulse series loading Hopkinson bar experimental device based on an electromagnetic launch
Wenkai Huang1, Guangxin Chen2, Mingbin Hu2
1Center for Research on Leading Technology of Special Equipment, School of Mechanical and Electric Engineering, Guangzhou University, Guangzhou 510006, People's Republic of China.
Abstract:
Controlled multi-pulse loading has seldom been applied in classical split Hopkinson pressure bar (SHPB) research. Therefore, a new technique is proposed to realize a controlled multi-pulse loading SHPB experiment, and a miniature multi-pulse series reluctance coil launcher is developed. The micro-multi-pulse series reluctance coil emitter consists of two single-stage reluctance coils and two impact bars. Two loading pulses with the same amplitude are produced by driving the two impact bars to successively impact the incident bar. The distance between the impact bars controls the delay of the second pulse relative to the first one. The delay can be controlled by adjusting the distance between the impact bars and the launch speed. This precise multi-pulse loading technique is easy to implement and can be used to measure and study the dynamic response of various materials in loading SHPB experiments.
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