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What Is Split Hopkinson Pressure Bar?

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Split Hopkinson pressure bar (SHPB) is named after a Father and son who made an effort to study the wave propagation in the iron wire during 1872-1914. John Hopkinson (1849-1898) introduced an experimental investigation of stress wave propagation in the iron wire in 1872 and his son, Bertram Hopkinson (1874-1918) employed dynamic load exerted by detonation of high explosive, as well as impact by means of a long steel rod, a short billet and a ballistic pendulum, in order to obtain pressure-time curve [1]. In 1941 Dennison Bancroft solved Pochhammer bar frequency equation made a significant improvement in the area of dispersion correction. Since the measurement equipment was inaccurate, Davis [2] improved the measurement technique by utilizing

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