Microscopic Imaging and Optical Pressure Measurements of Detonations,Propellants, Explosives, Pyrotechnics

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Microscopic Imaging and Optical Pressure Measurements of Detonations
Propellants, Explosives, Pyrotechnics ( IF 1.7 ) Pub Date : 2021-06-24 , DOI: 10.1002/prep.202000337
I. Emre Gunduz _{1,

2}

Affiliation

The microstructure of solid high explosives can affect their safety and performance. However, the extreme conditions in the vicinity of detonating explosives make high-resolution imaging and data acquisition challenges. A new diagnostic method is presented here that allows microscopic imaging of self-supported detonations while optically measuring pressures in an arbitrary confiner material nearby using an imaging fiber and an image intensifier at a safe distance. Tests with pressed pellets of HMX and PBX 9501 revealed features during pore collapse in engineered holes and detonation reaction zone morphology and thickness. Interface experiments allowed the measurement of pressure at the boundary between the explosive and a silicone polymer and the determination of the specific heat ratio for the gaseous products. The same methodology can be used to fit any form of equation-of-state and Hugoniot curves for arbitrary materials using few simple experiments.

中文翻译：

爆炸的显微成像和光学压力测量

固体烈性炸药的微观结构会影响其安全性和性能。然而，爆炸物附近的极端条件给高分辨率成像和数据采集带来了挑战。这里提出了一种新的诊断方法，该方法允许对自支撑爆炸进行显微成像，同时在安全距离处使用成像光纤和图像增强器对附近任意限制材料中的压力进行光学测量。对 HMX 和 PBX 9501 压片的测试揭示了工程孔中孔隙塌陷期间的特征以及爆震反应区的形态和厚度。界面实验允许测量炸药和有机硅聚合物之间边界处的压力，并确定气态产物的比热比。

更新日期：2021-06-24

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