Since the 1950s, the Georgia Tech Research Institute (GTRI) has maintained a strong research relationship with U.S. national security and defense based on early, seminal work that laid the foundation for now common-place techniques such as sputtering and molecular beam epitaxy. Today, materials research at GTRI develops ion-traps for quantum computing, advanced diamond-silver composite heat-sinks for phased array radars, carbon nanotube-based electron emitters for satellite propulsion, advanced phosphors for displays, metamaterials for signature reduction and antennas, and rare-earth substitute materials for magnets.
Georgia Tech’s research to understand dynamic response of materials at various length and time scales emphasizes both high-performance coarse-grained computational methods and molecular dynamics simulations, along with experimental characterization using laser interferometry and novel digital diagnostics. A variety of quasistatic and dynamic deformation and loading conditions encountered in engineering applications are considered. The computational and experimental techniques facilitate study of mesoscopic, microscopic, and nanoscopic material structures and phenomena. The objectives are to outline factors, mechanisms and conditions that enhance material performance under given conditions, to provide guidance for the enhancement of performance, and to facilitate the design of materials with specified functionalities.
Georgia Tech has a unique combination of experimental facilities and modeling and simulation capabilities to explore the behavior of materials subjected to high strain rate loading conditions. The Georgia Tech High-Strain-Rate Laboratory is equipped with interferometric, stress-gauge measurement, and high-speed digital data acquisition instrumentation, permitting material testing at strain rates up to 106 s-1, under a range of multiaxial states of stress through normal and pressure-shear (inclined) plate impact experiments. The Georgia Tech Dynamic Properties Research Lab facilities consist of a set of split Hopkinson bars, Gas Gun Facility, and Computational Resources.