Changgong successfully defended his Ph.D.

Ph.D. candidate Changgong Kim has successfully defended his research on “Ultrasonic characterization of microstructures and defects in stainless steel 316L”. Congratulations to Changgong. Changgong joined WPM Lab in 2017 as the Lab’s first Ph.D. student. He has done extensive experimental work on both linear and nonlinear ultrasonic techniques.