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Proceedings Paper

Designer materials for a secure future
Author(s): Nitin P. Daphalapurkar; K. T. Ramesh
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Paper Abstract

Materials for armor applications are increasingly being required to be strong and light-weight as a consequence of increasing threat levels. We focus on materials response subjected to impact loads, understanding deformation and failure mechanisms, and developing validated mechanism-based models capable of predicting materials response under high rate loading conditions. As a specific example, we will examine the dynamic behavior of nanocrystalline aluminum using atomistic simulations. The dynamic behavior of this material is discussed in terms of competing deformation mechanisms--slip and twinning. Insights from high strain rate atomistic simulations were used in developing a fundamental mechanism-based analytical model to assist in the microstructural design of advanced materials to tailor their macroscopic properties.

Paper Details

Date Published: 3 May 2012
PDF: 8 pages
Proc. SPIE 8373, Micro- and Nanotechnology Sensors, Systems, and Applications IV, 83731Q (3 May 2012); doi: 10.1117/12.919780
Show Author Affiliations
Nitin P. Daphalapurkar, Johns Hopkins Univ. (United States)
K. T. Ramesh, Johns Hopkins Univ. (United States)

Published in SPIE Proceedings Vol. 8373:
Micro- and Nanotechnology Sensors, Systems, and Applications IV
Thomas George; M. Saif Islam; Achyut Dutta, Editor(s)

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