亚太计量规划组织低g值冲击加速度研究性国际比对

APMP Pilot Comparison of Low-g Shock Acceleration Primary Calibration

2013年8月至2014年12月,中国计量科学研究院作为主导实验室,组织4个实验室参加了亚太计量规划组织低g值冲击加速度研究性比对。这次比对参比的测量装置包括2种基本类型的低g值冲击激励方式的激光绝对法测量系统。第一类基于半正弦冲击加速度波形比对的加速度范围为500 m/s^2至5000 m/s^2,冲击脉宽为0.5 ms至5 ms;第二类基于正弦冲击加速度波形比对的加速度为1000 m/s^2,冲击脉宽为0.03 ms至0.2 ms。比对结果表明,各参比实验室测量结果与比对参考值的偏差小于相应的等效不确定度。

As pilot lab, National Institute of Metrology, organized Asia Pacific Metrology Programme pilot comparison of primary low-g shock acceleration calibration from August, 2013 to December, 2014. The comparison covers primary shock calibration systems using laser interferometry with two basic types of low-g shock exciters from 4 participating labs. The peak value of shock acceleration for comparison of monopole shock pulse is from 500 m/s^2 to 5000 m/s^2 with pulse duration from 0.5 ms to 5 ms, and for comparison of dipole shock pulse is 1000m/s^2 with pulse duration from 0.03 ms to 0.2 ms. The comparison results show that the deviations of participants ＇ measurement results from reference values are within the associated uncertainties.