Zhuang, Shiming and Ravichandran, Guruswami and Grady, Dennis E. (2002) Influence of Interface Scattering on Shock Waves in Heterogeneous Solids. In: Shock compression of condensed matter--2001 : proceedings of the Shock COmpression of Condensed Matter held in Atlanta, Georgia, June 24-29, 2001. American Institute of Physics Conference Proceedings (620). American Institute of Physics , Melville, NY, pp. 709-712. ISBN 0735400687 http://resolver.caltech.edu/CaltechAUTHORS:ZHUaipcp02
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In heterogeneous media, the scattering due to interfaces between dissimilar materials play an important role in shock wave dissipation and dispersion. In this work the influence of interface scattering effect on shock waves was studied by impacting flyer plates onto periodically layered polycarbonate/6061 aluminum, polycarbonate/304 stainless steel and polycarbonate/glass composites. The experimental results (using VISAR and stress gauges) indicate that the rise time of the shock front decreases with increasing shock strength, and increases with increasing mechanical impedance mismatch between layers; the strain rate at the shock front increases by about the square of the shock stress. Experimental and numerical results also show that due to interface scattering effect the shock wave velocity in periodically layered composites decreases. In some cases the shock velocity of a layered heterogeneous composite can be lower than that of either of its components.
|Item Type:||Book Section|
|Additional Information:||©2002 American Institute of Physics The research reported here was supported by the Solid Mechanics program at the Army Research Office (Dr. M. A. Zikry, Program Manager) and is gratefully acknowledged.|
|Subject Keywords:||shock wave effects; surface scattering; inhomogeneous media; composite material interfaces; polymers|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Archive Administrator|
|Deposited On:||28 Apr 2006|
|Last Modified:||26 Dec 2012 08:51|
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