TY - JOUR N2 - The Hopkinson pressure bar has been developed to calibrate and assess high g accelerometers’ capacity. The extreme caution is indispensable for performing calibration of severe characteristics, like the bearable super-high overload peak and wide duration of stress. In the paper, the Hopkinson bar calibrating system is being critically appraised. A limiting formula is deduced based on the stress wave theory. It indicates that the overload peak and duration of stress are limited by the elastic limit and wave speed of Hopkinson bar material. Both stress wave configurations in the form of linear ramp and cosine functions were designed theoretically to meet typical calibrating requirements. They were confirmed experimentally with the aid of the pulse shaping technique. Their corresponding calibration characteristics were analysed critically, and it was found that the cosine stress wave can achieve the values of acceleration peak or duration by π/2 times greater than those obtained with the linear stress wave. Finally, some suggestions are proposed for more extreme calibration requirements. L1 - http://www.czasopisma.pan.pl/Content/111969/PDF/10_MMS-2019-2_06-12.pdf L2 - http://www.czasopisma.pan.pl/Content/111969 PY - 2019 IS - No 2 EP - 343 DO - 10.24425/mms.2019.128362 KW - Hopkinson bar KW - calibrating KW - high g accelerometer KW - limitation A1 - Miao, Yinggang PB - Polish Academy of Sciences Committee on Metrology and Scientific Instrumentation VL - vol. 26 DA - 2019.06.25 T1 - Critical appraising of Hopkinson bar techniques for calibrating high g accelerometers SP - 335 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/111969 T2 - Metrology and Measurement Systems ER -