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Seminar-Damping and Dissipation- Dr. A. Akay
October 27, 2016 @ 1:30 pm
Room 1228, EBII
Professor Adnan Akay
Provost, Bilkent University Ankara, Turkey
Abstract: The term damping is generally used to describe the means by which oscillation amplitudes are reduced through irreversible removal of vibratory energy. Dissipation, on the other hand, refers to the mechanism by which irreversible energy transfer to smaller scales takes place, and is inherently a nonlinear process. Accordingly, damping is a macro-scale manifestation of dissipation at the micro-scale. The larger scale damping may exhibit linear or nonlinear behavior depending on the system within which the vibratory energy is generated and transported. Damping is generally described by qualitative, empirical constants. What actually takes place during dissipation at the smaller scales is usually not formally considered in the engineering community. This presentation will give an overview of the numerous paths to damping and review some of the models developed to describe dissipation.
Professor Adnan Akay is currently the Provost at Bilkent University in Ankara, Turkey. He joined Bilkent in 2009 as Vice President and Professor of Mechanical Engineering. He moved to Bilkent from the U.S. National Science Foundation where he was the Director for the Civil, Mechanical and Manufacturing Innovation Division (CMMI), on leave from Carnegie Mellon University where he was a professor and the Head of the Mechanical Engineering Department. He has held visiting appointments at MIT, the University of Rome” La Sapienza,” and Institut National des Sciences Appliquées (INSA) de Lyon in France. His research lies in applied mechanics with emphasis on vibrations, acoustics, and tribology. He has received numerous awards for his work including the Per Brüel Gold Medal in Acoustics and Noise Control in 2005 and the Alexander von Humboldt Research Award in 2011. He is a fellow of the American Society of Mechanical Engineers and the Acoustical Society of America, and a member of several honor societies. His Ph.D. is from MAE, North Carolina State University.