Bors Dana, Cummins Josh, Goodpaster John
Forensic and Investigative Sciences Program, Department of Chemistry and Chemical Biology, Indiana University Purdue University Indianapolis (IUPUI), 402 North Blackford Street, Indianapolis, IN, 46202.
J Forensic Sci. 2014 Jan;59(1):42-51. doi: 10.1111/1556-4029.12294. Epub 2013 Oct 22.
Improvised explosive devices such as pipe bombs are prevalent due to the availability of materials and ease of construction. However, little is known about how these devices actually explode, as few attempts to characterize fragmentation patterns have been attempted. In this study, seven devices composed of various pipe materials (PVC, black steel, and galvanized steel) and two energetic fillers (Pyrodex and Alliant Red Dot) were initiated and the explosions captured using high-speed videography. The video footage was used to calculate fragment velocities, which were represented as particle velocity vector maps. In addition, the fragments were weighed. The results demonstrate a correlation between the type of energetic filler and both the size and velocity of the fragments. Larger fragments were produced by Pyrodex filler indicating a less complete fragmentation, compared with smaller fragments produced by double-base smokeless powder. Additionally, higher fragment velocities were seen with Alliant Red Dot filler.
诸如管状炸弹之类的简易爆炸装置因材料易得且易于制造而十分普遍。然而，对于这些装置实际如何爆炸却知之甚少，因为很少有人尝试对碎片模式进行表征。在本研究中，引爆了七个由不同管材（聚氯乙烯、黑钢和镀锌钢）和两种含能填料（黑火药和阿利安特红点火药）组成的装置，并使用高速摄像记录爆炸过程。视频片段用于计算碎片速度，以粒子速度矢量图表示。此外，还对碎片进行了称重。结果表明，含能填料的类型与碎片的大小和速度之间存在相关性。与双基无烟火药产生的较小碎片相比，黑火药填料产生的碎片更大，表明破碎不太完全。此外，阿利安特红点火药填料产生的碎片速度更高。
