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预加热金属Hugoniot参数和界面温度的联合测试技术

DOI: 10.11858/gywlxb.2011.05.007, PP. 421-428

Keywords: 电阻丝预加热,非接触式光纤探针,冲击Hugoniot参数,界面温度

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Abstract:

发展了一种可用于轻气炮压缩实验的电阻丝预加热装置和高温靶实验测试技术,通过微热电偶丝实时测量了预加热金属的初始温度,并利用非接触式光纤探针技术实现了Hugoniot参数和界面温度的同时测量。常温下实测的金属Ta的冲击波速度D和粒子速度u与文献报道的冲击实验数据相符,而初温773K金属Ta的(D,u)数据则低于采用Mie-Grüneisen状态方程计算的结果;实测的界面温度与Lindeman熔化线和第一性原理的计算结果均符合较好。实验结果表明,所设计的高温靶装置及相关实验诊断技术是可行并有效的,为今后开展材料动态性能的温度效应研究提供了一种有效的技术途径。

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