Date of Award
Doctor of Philosophy
Materials Science and Engineering
George M. Pharr
Yanfei Gao, T.G. Nieh, Sudarsanam S. Babu
Existing literature data on the creep behavior of superprotonic solid acids, which is important for their use in fuel cell applications, is scant and unreliable. Steady state creep behavior for the model material system cesium hydrogen sulfate (CHS) is probed using nanoindentation and corroborated using uniaxial compression testing. To facilitate nanoindentation creep result interpretation, a radial flow model of power law indentation creep is developed. This model is compared with the related model from Bower, et. al. for several pre-existing literature datasets showing that the nonlinear, steady state creep law underpinning both appears valid for power law indentation creep.
Ginder, Ryan Scott, "Temperature Dependent Mechanical Behavior of Solid Acids. " PhD diss., University of Tennessee, 2016.