The University of Southampton
University of Southampton Institutional Repository

Relationship between the morphology of granular cyclotrimethylene-trinitramine and its shock sensitivity

Relationship between the morphology of granular cyclotrimethylene-trinitramine and its shock sensitivity
Relationship between the morphology of granular cyclotrimethylene-trinitramine and its shock sensitivity
The sensitivity of explosives has been shown to be critically dependent on their morphology as well as their chemical properties. A critical hotspot can be seen as one end of the temperature distribution produced in a heterogeneous material by a shock. Studying shock sensitivity in a granular explosive thus allows insight into the temperature distribution produced by a shock in a granular material. In the case of cyclotrimethylene-trinitramine (RDX), a commonly used explosive, no consensus exists on the dominant features which promote critical hotspots. We present an investigation of the morphology and sensitivity of seven batches of RDX in two size classes and with a range of morphologies. Both the individual crystal morphology and the bulk granular morphology were studied and the features likely to interact with a shock in a granular material to form a critical hotspot are identified. We find that the internal void count does not correlate with the sensitivity of a granular bed and that crystals with defects can be insensitive in such a charge. Sensitivity in our tests was correlated with the presence of surface “dimples” for particles which are 10–30??m in size. For larger particles (100–300??m in size), more angular crystals were more sensitive.
crystal morphology, explosives, granular materials, organic compounds, shock wave effects
0021-8979
113515-113523
Czerski, H.
7d291075-9bab-46f8-9005-21b31220b96a
Proud, W.G.
ef2dca77-4d76-43c7-850e-3351e85d58ac
Czerski, H.
7d291075-9bab-46f8-9005-21b31220b96a
Proud, W.G.
ef2dca77-4d76-43c7-850e-3351e85d58ac

Czerski, H. and Proud, W.G. (2007) Relationship between the morphology of granular cyclotrimethylene-trinitramine and its shock sensitivity. Journal of Applied Physics, 102 (11), 113515-113523. (doi:10.1063/1.2818106).

Record type: Article

Abstract

The sensitivity of explosives has been shown to be critically dependent on their morphology as well as their chemical properties. A critical hotspot can be seen as one end of the temperature distribution produced in a heterogeneous material by a shock. Studying shock sensitivity in a granular explosive thus allows insight into the temperature distribution produced by a shock in a granular material. In the case of cyclotrimethylene-trinitramine (RDX), a commonly used explosive, no consensus exists on the dominant features which promote critical hotspots. We present an investigation of the morphology and sensitivity of seven batches of RDX in two size classes and with a range of morphologies. Both the individual crystal morphology and the bulk granular morphology were studied and the features likely to interact with a shock in a granular material to form a critical hotspot are identified. We find that the internal void count does not correlate with the sensitivity of a granular bed and that crystals with defects can be insensitive in such a charge. Sensitivity in our tests was correlated with the presence of surface “dimples” for particles which are 10–30??m in size. For larger particles (100–300??m in size), more angular crystals were more sensitive.

Full text not available from this repository.

More information

Published date: 7 December 2007
Keywords: crystal morphology, explosives, granular materials, organic compounds, shock wave effects

Identifiers

Local EPrints ID: 165643
URI: https://eprints.soton.ac.uk/id/eprint/165643
ISSN: 0021-8979
PURE UUID: 554cc80f-0b02-4cc2-927a-54c1c95d53a8

Catalogue record

Date deposited: 19 Oct 2010 08:43
Last modified: 18 Jul 2017 12:27

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×