Correlation between hot spots and 3-D defect structure in single and polycrystalline high-explosive materials
Document Type
Conference Proceeding
Publication Date
1-1-2017
Publication Title
Procedia Engineering
Publisher
Elsevier Ltd
Volume
204
First page number:
360
Last page number:
366
Abstract
A novel approach that spatially identifies inhomogeneities from microscale (defects, con-formational disorder) to mesoscale (voids, inclusions) is developed using synchrotron x-ray methods: tomography, Lang topography, and micro-diffraction mapping. These techniques provide a non-destructive method for characterization of mm-sized samples prior to shock experiments. These characterization maps can be used to correlate continuum level measurements in shock compression experiments to the mesoscale and microscale structure. Specifically examined is a sample of C4. We show extensive conformational disorder in gamma-RDX, which is the main component. Further, we observe that the minor HMX-component in C4 contains at least two different phases: alpha- and beta-HMX in spatially variable amounts. PETN sprayed film was found to be very homogeneously fine grained with modest preferred orientation of crystallites and modest rotational disorder of nitro-groups. © 2017 The Authors. Published by Elsevier Ltd.
File Format
File Size
1010 kb
Language
english
Repository Citation
Hawkins, C.,
Tschauner, O.,
Fussell, Z.,
Smith, J.
(2017).
Correlation between hot spots and 3-D defect structure in single and polycrystalline high-explosive materials.
Procedia Engineering, 204
360-366.
Elsevier Ltd.
http://dx.doi.org/10.1016/j.proeng.2017.09.778
