Tyas, A. orcid.org/0000-0001-6078-5215, Reay, J.J., Fay, S.D. et al. (4 more authors) (2016) Experimental studies of the effect of rapid afterburn on shock development of near-field explosions. International Journal of Protective Structures, 7 (3). pp. 452-465. ISSN 2041-4196
Abstract
Many conventional high explosives do not contain sufficient internal oxygen to fully combust the gaseous products which result from detonation of the explosive material. Because of this, under-oxygenated explosives continue to burn after detonation. This process, called afterburn, is known to influence the late-time pressure and energy released by the explosive, which has particular significance for confined explosives. Recent experimental work at the University of Sheffield, along with a small number of previous studies, has shown that some afterburn occurs at timescales commensurate with the development of the shock wave. This article presents the results from a series of tests measuring the reflected pressure acting on a rigid target following the detonation of small explosive charges. High-speed video is used to capture the emerging structure of the detonation products and air shock, while the spatial and temporal distributions of the reflected pressure are recorded using an array of 17 Hopkinson pressure bars set flush with an effectively rigid target. Tests are conducted in inert atmospheres and oxygen-rich atmospheres in order to assess the contribution of rapid afterburn on the development of the shock front and interaction with a rigid target situated close to the explosive charge. The results show that early-stage afterburn has a significant influence on the reflected shock parameters in the near-field.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 The Author(s). Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | Blast; experimental measurements; near-field; rapid afterburn; shock |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield) |
Funding Information: | Funder Grant number ROYAL ACADEMY OF ENGINEERING (THE) RCSRF1516\1\5 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 14 Dec 2016 14:15 |
Last Modified: | 24 Aug 2020 08:37 |
Published Version: | http://doi.org/10.1177/2041419616665931 |
Status: | Published |
Publisher: | Multi-Science Publishing |
Refereed: | Yes |
Identification Number: | 10.1177/2041419616665931 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:108465 |