Experimental study on impact-initiated characters of W/Zr energetic fragments

被引：54
作者：
Luo, Puguang [1 ]
Wang, Zaicheng [1 ]
Jiang, Chunlan [1 ]
Mao, Liang [1 ]
Li, Qiang [1 ,2 ]
机构：
[1] Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
[2] PLA, Unit 96528, Beijing 102202, Peoples R China
来源：
MATERIALS & DESIGN | 2015年 / 84卷
关键词：
Energetic fragments; Impact-initiated reaction; Critical energy; Energy release character; Composites material; RODS;
D O I：
10.1016/j.matdes.2015.06.107
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Fragments of energetic materials have stronger damage effect than traditional inert fragments due to additional energy released by simultaneous chemical reaction. In order to characterize the effect of the properties of energetic materials on the chemical reaction, a vented chamber is used to measure the released energy of energetic fragments under impact conditions, a method developed by Ames. Two energetic fragments, W/Zr-based alloy composites and W/Zr-based metallic glass composites, are also used. They are driven by a 12.7 mm ballistic gun, with various levels of velocity, to impact the sealed chamber containing plates with different material and thickness. High-speed videos of energetic fragments of impact-initiated reaction are recorded through an observational window. The pressure in the chamber is measured by strain pressure sensors. According to one-dimensional shock wave theory, the critical energy generated from the impact-initiated chemical reaction by W/Zr-based alloy composites energetic fragments are calculated, using the data collected from the experiment. The effects on impact-initiated chemical reaction, of types of energetic fragments used in the experiment, as well as target material and thickness are discussed and analyzed. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：72 / 78
页数：7
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