Experimental study of ejecta from shock melted lead

被引：67

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

页数：8

共 27 条

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[8]

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