The primary objective of the Mechanics of Materials under Extreme Environments group is to develop the fundamental knowledge required to enhance material functionality under extreme environments such as high strain rate deformation, elevated temperatures, high radiation fluxes, photonic and phononic interactions, or a multitude of the above factors for defense, aerospace and propulsion applications. The main goal is to investigate the constitutive response and roles of evolving intrinsic field variables to provide kinematic, kinetic, and dynamic descriptions of failure mechanisms in critical structural materials.
Shown is a dynamic compression test of additively manufactured Inconel 718. The strain rate is approximately 103s-1. It is seen there is a significant drop in the stress-strain curve at the onset of strain localization in the DIC imagining. Images were recorded at 500,000 fps with a Shimadzu ultra-high speed camera.
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