Experimental study of ejecta from shock melted lead

被引：66
作者：
Chen, Yongtao [1 ,2 ]
Hu, Haibo [1 ,2 ]
Tang, Tiegang [1 ,2 ]
Ren, Guowu [1 ,2 ]
Li, Qingzhong [1 ,2 ]
Wang, Rongbo [1 ,2 ]
Buttler, William T. [3 ]
机构：
[1] CAEP, Lab Shock Wave, Mianyang 621900, Sichuan, Peoples R China
[2] CAEP, Detonat Phys Res Inst Fluid Phys, Mianyang 621900, Sichuan, Peoples R China
[3] Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA
来源：
JOURNAL OF APPLIED PHYSICS | 2012年 / 111卷 / 05期
关键词：
SURFACES; METALS; DAMAGE; SPALL;
D O I：
10.1063/1.3692570
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
This effort investigates the dynamic properties of ejecta from explosively shocked, melted Pb targets. The study shows that the ejecta cloud that expands beyond the shocked surface is characterized by a high density and low velocity fragment layer between the free-surface and the high velocity micro-jetting particle cloud. This slow, dense ejecta layer is liquid micro-spall. The properties of micro-spall layer, such as the mass, density and velocity, were diagnosed in a novel application of an Asay window, while micro-jetting particles by lithium niobate piezoelectric pins and high speed photography. The total mass-velocity distribution of ejecta, including micro-spall fragments and micro-jetting particles, is presented. Furthermore, the sensitivity of ejecta production to slight variations in the shockwave drive using the Asay foil is studied. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3692570]
引用
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页数：8
相关论文
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