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The Response of Material Heterogeneities to Stress Wave Loading

Swantek, A. B. and Duchek, M. and Austin, J. M. (2011) The Response of Material Heterogeneities to Stress Wave Loading. In: Central States Section of the Combustion Institute Spring Technical Meeting 2010 : Champaign, Illinois, USA, 21-23 March 2010. The Combustion Institute , Pittsburgh, PA, pp. 608-614. ISBN 9781617828843.

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We present dynamic experiments designed to examine the interaction of a loading wave with material heterogeneities; for example, as representatives of oxidizer particles in energetic materials. In our model experiments, we use a gas gun to load a thin sheet of polymer material containing a cylindrical inclusion. We utilize two different types of inclusions; an elastomer (polydimethysiloxane) and a liquid of high acoustic impedance (glycerol). Full velocity fields, including the first measurements of this type internal to the inclusion, are achieved with a single frame, two-color particle image velocimetry (PIV) system. Vector and contour plots are presented at different times during the event, as well as cross sectional velocity profiles through the inclusion. Clamping the test samples molds with different torques is found to lead to three-dimensional effects in the case of the elastomer.

Item Type:Book Section
Additional Information:© 2010 The Combustion Institute. The authors gratefully acknowledge Prof. John Lambros for · the generous loan of laboratory equipment and space which made this study possible. We thank Matthew Parker for his initial experiments, Prof. Greg Elliott for valuable input in the PIV measurements, Prof. Jonathan Freund, Dr. Thomas Jackson, Prof. Carlos Pantano, Dr. Ratnesh Shukla and Prof. Scott Stewart for extensive discussions comparing experiments and simulations, and researchers in the DE-9 division at Los Alamos National Laboratories. This work was supported in part by the US Department of Energy through the University of California under subcontract B523 819 and in part by Air Force Office of Scientific Research under A9550-10-C-0008.
Funding AgencyGrant Number
Department of Energy (DOE)B523819
Air Force Office of Scientific Research (AFOSR)FA9550-10-C-0008
Record Number:CaltechAUTHORS:20141015-100651438
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50399
Deposited By: Kristin Buxton
Deposited On:15 Oct 2014 23:07
Last Modified:03 Oct 2019 07:23

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