Designer materials for a secure future

Nitin P. Daphalapurkar; K. T. Ramesh

doi:10.1117/12.919780

3 May 2012 Designer materials for a secure future

Nitin P. Daphalapurkar, K. T. Ramesh

Proceedings Volume 8373, Micro- and Nanotechnology Sensors, Systems, and Applications IV; 83731Q (2012) https://doi.org/10.1117/12.919780
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

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.

Citation Download Citation

Nitin P. Daphalapurkar and K. T. Ramesh "Designer materials for a secure future", Proc. SPIE 8373, Micro- and Nanotechnology Sensors, Systems, and Applications IV, 83731Q (3 May 2012); https://doi.org/10.1117/12.919780

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