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Microstructural Effects on the Shock Compression Response of Cold-Rolled Ni/Al Multilayers

Published online by Cambridge University Press:  01 February 2013

Paul E. Specht,
Naresh Thadhani and
Timothy P. Weihs
Paul E. Specht
Affiliation:
Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA.
Naresh Thadhani
Affiliation:
Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA.
Timothy P. Weihs
Affiliation:
Materials Science and Engineering, The Johns Hopkins University, Baltimore, Maryland, USA.
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Abstract

Heterogeneities at the meso-scale strongly influence the shock compression response of composite materials. Laminated geometries with full density and intimate particle contacts provide a unique system to investigate the influence of microstructure on a propagating shock wave. Computational analysis is used to understand the effects of layer orientation and bilayer spacing on the shock compression response of cold-rolled Ni/ Al multilayers. Real, heterogeneous microstructures, obtained from optical micrographs, are incorporated into the Eulerian, finite volume code CTH. The results show a marked difference in the dissipation and dispersion of the shock wave as the underlying microstructure varies.

Keywords

shock loadingsimulationcomposite

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References

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