Ares J. Rosakis, Theodore von Karman Professor of Aeronautics, Professor of Mechanical Engineering, and Chair of the Division of Engineering and Applied Science at Caltech, is the recipient of the Society for Experimental Mechanics (SEM) 2013 P.S. Theocaris Award. This award recognizes a senior professional who is a Fellow of SEM and who has conducted outstanding research throughout his career in the field of experimental mechanics.