A majority of our ultrasonic scattering research is devoted to wave propagation through polycrystalline materials with various microstructures.
Material microstructure is more complex than grain size alone and we are developing models of the complete scattering process so that ultrasonic measurements can be used to quantify grain size, grain elongation, grain microstructure (i.e., duplex) and material texture.
Figures: Multiple images of graphs about Microstructure Characterization pulse-echo backscatter at normal incidence in steel (blue is the experiment; red is our model); pitch-catch in steel (blue is the experiment ; red is our model). These measurements can be used to quantify grain size, grain elongation, and material texture