Sub-fragmentation of structural reactive material casings under explosion
| Autor: | Fan Zhang, C. V. Cojocaru, Maxime Gauthier |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| DOI: | 10.1063/1.4971532 |
| Popis: | A concept of reactive hot spots intruded in a thick, structural reactive material casing was investigated to generate fine fragments for efficient energy release from casing material under explosive loading. This was achieved through distributing micro MoO3 particles into a granular Al casing, made by hot isostatic pressing, in a fuel-rich ratio of 10Al+MoO3. Reaction of Al and MoO3 during casing primary or secondary fragmentation creates heat and gas products to form micro-scale hot spots, whose expansion initiates local fractures leading to fine fragments of the rest of Al. Explosion experiments, using a 4.4 cm diameter cased charge with a casing-to-explosive mass ratio of 1.78 in a 2.1 m3 cylindrical chamber, demonstrated the presence of fine fragments and more efficient fragment combustion to augment air blast, as compared to a baseline pure Al-cased charge, thus indicating the feasibility of the concept. Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, 14-19 June 2015, Tampa Bay, Florida, USA Series: AIP Conference Proceedings; no. 1793 |
| Databáze: | OpenAIRE |
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