Focus Areas

NSF
Nucleation within Steep Composition Gradients
This DOE project aims to build on our previous work and established capability using nanocalorimeters to study intermetallic formation reactions in the presenence of steep composition gradients. The theory developed in the project will be a notable improvement on our existing understanding of how nucleation occurs in concentration gradients, with the experiments representing the first rigorous and systematic verification of such a model.
Responsible Group Members: Shane Arlington, Dr. Peng Yi                            More details >>
Mg
Thermo-mechanical Processing of Mg Alloys
This DoD project investigates and characterizes the microstructural evolution of magnesium and magnesium alloys under high temperatures and severe plastic deformation. Neutron diffraction and electron backscatter diffraction are being used to investigate the effects of processing parameters on the microstructure evolution of magnesium during and following thermos-mechanical processing by Equal channel angular extrusion.
Responsible Group Members: Suhas EP, Jenna Krynicki                                  More details >>
DARPA
Materials with Controlled Microstructural Architecture
This DARPA project studies architectural and microstructural optimization of 3D Woven structural materials. To develop novel structural materials in a far more rapid and efficient manner, we use topological optimization methods to predict ideal material architectures and novel textile processing to fabricate those architectures. The designed and manufactured 3D Woven materials possess superior permeability, stiffness, and heat transfer properties.
Responsible Group Members: Ju Xue                                                             More details >>
DTRA
Tunable Reactive Composite Materials for Bio-Agent Defeat
This project, funded by the Defense Threat Reduction Agency (DTRA), is focused on developing a combination of reactive fuels materials and biocidal compounds to destroy bio-agents such as anthrax. The fuels, in this case, are reactive nanocomposites that consist of many layers of different metals, with thicknesses ranging from microns to nanometers.
Responsible Group Members: Elliot Wainwright, Shashank Vummidi-Lakshman, Preetom Borah, Michelle Niu                                                                                           More details >>

Less Active Research Projects

MEDE
In-Situ High Strain Rate Study of Mg Deformation
This DoD project studies very high strain rate mechanical testing of Mg alloys with concurrent electron microscopy. The current approach aims to utilize high-performance piezoelectric actuators to load a thinned sample at strain rates from 102 - 104 s-1.
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Teeth
The Mechanical Properties of Human Enamel and Dentin
Over the last two decades we have studied the mechanical properties of teeth: the hard outer covering of enamel and to a lesser degree the softer mid-layer of dentin. We have found significant variations in the hardness and stiffness of human molar enamel, and we have correlated these changes with trends in the local chemistry and organic content. In addition, we have identified similar trends in monkey teeth and human incisors.
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DOE
Brazing Dissimilar Metals with Novel Composite Foils
This DoE and U.S. Army funded project sought to create and optimize novel reactive foils that are capable of joining dissimilar metals and alloys. Emphasis is placed on creating brazes that are mechanically and chemically robust for a variety of material combinations.
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