Wilfred Iwan, Professor of Applied Mechanics, Emeritus, has been selected as an honorary member of the Earthquake Engineering Research Institute (EERI). Honorary memberships are awarded in recognition of sustained and outstanding contributions to the field of earthquake engineering. Professor Iwan’s research focuses on fundamental areas of mechanics, understanding and characterization of strong earthquake ground motion, analysis and monitoring of the response of structural systems subjected to extreme events, and public policy regarding disasters.
His research achievements include the development of methods to represent complex nonlinear structures with simpler linear systems, the development of practical methods for earthquake-resistant design, and the development of simplified methods for the analysis of seismic isolation systems for critical equipment. In 1979 he proposed an earthquake early-warning system for urban regions. He introduced the concept of a “drift demand spectrum” as a means of measuring the damage potential of strong earthquake ground motion, and has worked toward improving both seismic instrument design and the interpretation of data. [EERI Release]