Understanding the failure mechanism of materials at extreme condition is essential and at the same time challenging. There have been different approaches proposed over the years to studying materials response at extremely aggressive environment, for example high pressure, ultrahigh temperature. With the advent of high speed imaging systems and computer processing power, these days, high quality images can be taken as fast as 200 million frames/sec and one can study the failure mechanisms at such a high events by carefully analyzing the digital images taken during testing. We used a digital image based approach and characterize the deformation mechanism of materials at different loading conditions, at different time and length scale. In this talk, different examples such as, shock loading of rigid foams and direct impact of polymer bonded sugar crystal will be presented.
Dr. Addis Kidane is an assistant professor of Mechanical Engineering at the University of South Carolina. He got his Ph.D. from the University of Rhode Island in 2009 and spent 2 years at California Institute of Technology as a postdoctoral scholar before he moves to Columbia. His research focuses on, multifunctional materials, materials behavior at extreme conditions, materials subjected to shock and blast loading and fracture and failure of materials at different length and time scale.
Dr. Kidane has published more than 75 peered reviewed journals and conference proceedings. He is a recipient of many prestigious awards including, (1) ORR Early Career Award form ASME Materials Division in 2016, (2) Young Investigator Award form AFOSR in 2014 and (3) The Haythornthwaite Research Initiation Grants from ASME Applied Mechanics Division in 2013.