| Autor: |
Yi-jiang Xue, Qing-ming Zhang, Dan-yang Liu, Ren-rong Long, Yang-yu Lu, Tian-fei Ren, Liang-fei Gong |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Defence Technology, Vol 17, Iss 2, Pp 375-383 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2214-9147 |
| DOI: |
10.1016/j.dt.2020.02.011 |
| Popis: |
Impact flash occurs when objects collide at supersonic speeds and can be used for real-time damage assessment when weapons rely on kinetic energy to destroy targets. However, the mechanism of impact flash remains unclear. A series of impact flash experiments of flat-head long-rod projectiles impacting thin target plates were performed with a two-stage light gas gun. The impact flash spectra for 6061 aluminum at 1.3–3.2 km/s collision speeds were recorded with a high-speed camera, a photoelectric sensor, and a time-resolved spectrometer. The intensity of the impact flash exhibited a pulse characteristic with time. The intensity (I) increased with impact velocity (V0) according to I∝V0n , where n = 4.41 for V0 > 2 km/s. However, for V0 2 km/s, a continuous spectrum (thermal radiation background) was observed and increased in intensity with V0. However, for V0 |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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