2 TPa压力下2169钢的冲击压缩测量

 利用地下爆炸产生的冲击波进行2169钢冲击压缩测量。测量是根据阻抗匹配解方法并且以铁作为标准材料。布置47根接触电探针以确定2169钢和标准材料中的冲击波速度以及冲击波阵面形状。测量出的2169钢冲击压缩参数是：冲击波速度u_s=22.12 km/s，波后粒子速度u_p=13.39 km/s，冲击波压力p=2.31 TPa和压缩比σ=2.53。本测量结果与较低压力下化爆测量结果的外推值的比较表明，两者基本一致。

SHOCK COMPRESSION MEASUREMENT FOR 2169 STEEL AT 2 TPa

A shock wave generated by an underground explosion was used to perform the shock compression measurement for the 2169 steel sample. The measurement is based on impedance-matching method and the iron material is used for standard. An array of 47 electrical pins was used to determine the shock velocities in the standard, in the 2169steel sample, and the shape of the shock front. The measured shock compression parameters are as follows :us (shock velocity) = 22.12km/s ,up(particle velocity)= 13 .39 km/s , p( shock pressure) = 2. 31 TPa and o(shock compression ratio) = 2. 53. The measured results are in a-greement with the extrapolation value of the previous experiment performed using explosive system at lower pressures.