sample homogeneity, and sample-to-sample variability. Although this example focuses on the challenges associated with ceramics, similar materials-specific complexities arise in composite materials, fibers, and textiles, in concrete and laminated assemblies of multiple materials, and the associated interfaces contained therein.

STATEMENT OF TASK

     An ad hoc committee will conduct a study and prepare a report on protection materials for the Army to explore the possibility of a path forward for these materials. Specifically, the committee will:

     1. Review and assess the current theoretical and experimental understanding of the major issues surrounding protection materials.

     2. Determine the major challenges and technical gaps for developing the future generation of light weight protection materials for the Army, with the goal of valid multi-scale predictive simulation tools for performance and, conversely, protection materials by design.

     3. Suggest a path forward, including approach, organizational structure and teaming, including processing, material characterization (composition and microstructure), quasi-static and dynamic mechanical testing and model development and simulation and likely timeframes for the Army to deliver the next generation protection materials.

In considering these questions, the committee should consider the following:

  • Shock wave energy dissipative (elastic, inelastic and failure) and management mechanisms throughout the full materials properties spectrum (nano through macro).
  • Experimental approaches and facilities to visualize and characterize the response at nano and mesoscales over short time scales.
  • Multi-scale modeling techniques to predict energy dissipative mechanisms (twinning, stacking faults, etc.) from the atomic scales and bulk material response.
  • Materials and material systems issues including processing and characterization techniques focusing on intrinsic (single crystal) properties and processing controlled extrinsic characteristics (phases, microstructure, interfaces).


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