A Study of Creep Properties of Polymer Bonded Explosives
A Study of Creep Properties of Polymer Bonded Explosives
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DOI：
10.4028/www.scientific.net/amr.33-37.407
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发表时间：
2008-03
期刊：
影响因子：
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通讯作者：
Zhanwei Liu;H. Xie;Pengwan Chen;F. Huang
中科院分区：
文献类型：
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作者：
Zhanwei Liu;H. Xie;Pengwan Chen;F. Huang
采用云纹干涉法研究了聚合物粘结炸药(PBXs)的蠕变特性。采用了不同热压工艺制备的试件。借助于压缩圆盘试验间接测量了PBX材料的大范围蠕变变形。结果表明，热压工艺的压力和温度对蠕变性能有很大影响。结果表明，热压工艺中温度和压制压力越高，PBXs材料的蠕变性能越好。用扫描电子显微镜(SEM)观察了PBX的蠕变断口。结果表明，大部分断裂裂纹是在蠕变过程中沿炸药晶面萌生和扩展的。
Creep properties of polymer bonded explosives (PBXs), a particulate composite, was studied by using the method of moiré interferometry in this paper. The specimens fabricated by different heat pressing technology were used. Extensive creep deformation of PBXs material was indirectly measured by the aid of compressive circular disk test. The obtained results shown that creep properties are greatly influenced by pressing pressures and temperature of heat pressing technology. The results indicated that the higher the temperature and the pressing pressure are in the heat pressing technology to some degree, the better the PBXs material creep resistance is. The creep fracture surfaces of PBXs were also observed using Scanning Electronic Microscopy (SEM). It was shown that most of the fracture crack was initiated and propagated along the explosives crystal surface during creep.