Experimental observations of exploding bridgewire detonator function
| Autor: | Frans Trouw, Jason Allison, Bryan Henson, Christopher Morris, Kathy Prestridge, Dale Tupa, Amy Tainter, Levi P. Neukirch, D. Cardon, R. Uliano, J. L. Tybo, Dennis K. Remelius, Zhaowen Tang, W. Z. Meijer, Mary M. Sandstrom, Tamsen Schurman, Natalya Suvorova, Alexander Saunders, Matthew S. Freeman, Pamela Bowlan, Fesseha Mariam, Laura Smilowitz |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Physics Explosive material Acoustics Detonation Exploding-bridgewire detonator General Physics and Astronomy 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Schlieren imaging Detonator Bridgewire Shock (mechanics) 0103 physical sciences Light emission 0210 nano-technology |
| Zdroj: | Journal of Applied Physics. 128:215901 |
| ISSN: | 1089-7550 0021-8979 |
| DOI: | 10.1063/5.0021288 |
| Popis: | Exploding bridgewire detonators are an industry standard technology used for over 75 years and valued for their precise timing and safety characteristics. Despite widespread use, their functional mechanism remains controversial with both shock and non-shock mechanisms attributed. In this work, we reexamine the bridgewire detonator function with a suite of modern diagnostics and compare these observations with the existing literature. Traditional detonator observations consisted of voltage applied to the bridgewire and time dependent current, integral response measurements such as case motion, and more recently Schlieren imaging of the detonator surface. In this work, we add visible light emission, x-ray transmission, proton radiography, and temperature measurements during detonator function in addition to voltage, current, and function times. The addition of in situ observations of light emission, temperature, and density gives us new insight into the mechanisms of explosive bridgewire detonator function. We see a distinct separation in time, location, symmetry, and velocity of bridgewire output and detonation onset. During the time between bridgewire burst and the initiation of detonation, we observe a temperature ramp in the input pellet. In this paper, we present the suite of measurements and comparisons with the literature on integral response measurements. |
| Databáze: | OpenAIRE |
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