Plenary Lecture

On Gradient Deformation and Flow Theories:
From Macro and Meso Scales to Nano and Astro Scales

Professor Elias C. Aifantis
Laboratory of Mechanics and Materials
Polytechnic School
Aristotle University of Thessaloniki, Thessaloniki GR-54124, GREECE
Center for Mechanics of Material Instabilities and Manufacturing Processes
College of Engineering
Michigan Tech University
Houghton, MI 49931, USA

Abstract: G
radient theories for elasticity, plasticity and dislocation dynamics have been advanced by the author and his co-workers to address deformation and flow at various scales at macro, micro and nano regimes. It was shown that instabilities, pattern formation and size effects may be conveniently described, whereas classical continuum theories fail to do so. The theory is now extended to describe coupled physicochemical and electromagnetic processes under applied or internal stress across the scale spectrum within a multiphysics framework. A number of examples of interest to current technology, physical science and biology are discussed.

Brief Biography of the Speaker:
E. C. Aifantis is a Professor of Mechanics at the Aristotle University of Thessaloniki, Hellas, and a Distinguished Research Professor of Engineering at Michigan Technological University, USA. For the last 10 years he has been coordinating a European Research/Training Network, sequence on Material Instabilities in Deformation and Fracture involving a number of leading European Laboratories (e.g. Cambridge, Delft and 5 more) with a total of about $5 million. Most recently a European Research Council (ERC) Starting Grant recipient (K. Aifantis) funded with 1.13 million Euros decided to conduct her research in his laboratory (Physics Today - April 2008 issue, pp. 30-31, BBC -; Science Careers - Moreover, two EU International Incoming Fellowships of 200 kEuros each were awarded (A. Romanov/Ioffe Physicotechnical Institute, Russia, and N. Kioussis/California State University, USA). He is also a co-PI of a NIRT NSF Program on Nanomechanics of Polymeric and Biological Nanofibers with a total budget exceeding $1 million. He has published over 450 papers, edited 12 books, organized numerous international conferences, and has been invited as keynote speaker on various occasions. He is an Editor of the Journal of Mechanical Behavior of Materials, Honorary Editor of Computer and Experimental Simulations in Engineering and Science, on the Advisory/Editorial board of Numerical and Analytical Methods in Geomechanics, Open Mechanics Journal, Journal of Nano Research, Acta Mechanica (formerly), Mechanics of Cohesive-Frictional Materials (formerly). In June 2005 in the joint ASME/ASCE/SES Mechanics and Materials Conference in Baton Rouge, a Symposium was held honoring his contributions in gradient theory, dislocation patterning and material instabilities.






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