Organization: University of Ljubljana, Slovenia
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Biography:
Igor Emri was born on 22 May 1952 in Murska Sobota. He studied at the Faculty of Mechanical Engineering of the University of Ljubljana, graduated in 1975, was elected Teaching Assistant, successfully defended his DrSc thesis in 1981, was elected Assistant Professor in 1983, Associate Professor in 1988 and Full Professor of the University of Ljubljana in 1996.
In 1993, together with Professor W.G. Knauss from the California Institute of Technology, Emri opened a new research area "Mechanics of time dependent materials - MTDM" as a division of American Scientific Association, The Society of Experimental Mechanics SEM. That same year, Emri became the first Head of this department and the initiator of international conferences in this field. Emri was elected President of the American Scientific Association as the first non-US national in 2000.
In 1997, Springer Publishing first issued the journal Mechanics of Time Dependent Materials," today ranking among the top third of journals in the field of mechanics and rheology. Professor Emri has been the journal’s Editor in Chief since its first publication.
Emri’s research focuses on the mechanics of dissipative systems with an emphasis on the study of impact of the speed of change of thermo-mechanical boundary conditions on the formation process of polymeric materials structure and their macro-, micro-and nano-composites. He developed the first non-linear viscoelastic model, known in literature as the Knauss-Emri model, which enables the inventory of non-linear behaviour of polymers exposed to complex time-dependent thermo-mechanical stress. The model is cited in the Web-of-Science base 207 times.
For this achievement, Emri was awarded the Kaptisa Medal by the Russian Academy of Natural Sciences (the highest RANS award. Based on these achievements, he was also made Full Member of the afore-mentioned Academy, Full Member of the Russian Engineering Academy and Corresponding Member of the American Academy of Mechanics, AAM. In 2000, Emri was listed among the world's leading experts in the design of polymeric materials in the book Who's Who and Polymers and Plastics, Society of Plastics Engineers (SPE), USA.
In the Knauss-Emri model, the structure reorganisation process of dissipative systems is described by relative "internal time," which is used to measure the speed of the reorganization process and the material structure formation. The complexity and kinetics of material structure reorganization is reflected in the degree of temporal dependence of its mechanical and other physical characteristics. The relaxation spectrum is used to describe the temporal dependence of mechanical properties. Mechanical spectrum determination requires the inverse solution of Fredholm integral equations of the first or second order, which is numerically unstable (ill-posed). One of the most successful numerical algorithms for calculating the mechanical spectres is the Emri-Tschoeg algorithm. It is cited 231 times in the Web-of-Science base.
With colleagues, Emri developed an entirely original measuring system for the purposes of experimental study of the influence of thermomechanical boundary conditions on the process of forming the material structure, named "CEM Measuring System" (abbreviation of: Centre for Experimental Mechanics, headed by Emri at the University of Ljubljana) appears in the handbook Springer Handbook of Experimental Solid Mechanics, Springer, 2008.
Emri used the Emri-Knauss model, the Emri-Tschoegl algorithm and the newly developed measuring system as a new innovative theoretical and experimental approach to exploring the processes of forming the structure of dissipative systems - in this case - polyamides, under the influence of complex thermomechanical boundary conditions.
In collaboration with the BASF Corporation and using this approach, Emri developed a new generation of "multimodal" polyamides, which go beyond the mechanical properties of materials are now known for several orders of magnitude, while characterized by properties that conventional materials do not. This technological breakthrough has been protected by a series of global and separate American patents.
In 1997, Emri established the Chair of the Mechanics of Polymers and Composites at the Faculty of Mechanical Engineering in which the objects introduced in the field of time-dependent materials and nano-related technologies. He lectured as Visiting Professor lectured at several universities in Europe, Japan and the USA. Since 200, Emri is Visiting Professor in the Department of Aeronautics at the prestigious California Institute of Technology in the USA (Caltech).
Emri became a member of professional associations Borda Wissenschaftlicher Arbeitskreis der Universitäts-Professor der Kunststofftechnik, which brings together 25 institutes (24 EU and 1 U.S.) in the field of polymer technology in 2002. He is also an expert of the European Commission FP4, FP5, FP6 and FP7. Since 2000, Emri has been a member of the Presidency of the European Society of Rheology.
Multimodal materials exhibit highly nonlinear behaviour and are capable of forming structures which demonstrate the ability to grow into the surrounding tissue, i.e. osteointegration and / or controlled degradation in the pre-defined period of time if subjected to minute changes in extreme thermo-mechanical boundary conditions. This property facilitates the possibility of application of these materials for medical purposes mainly in dental and orthopaedic surgery. The world's first implants to display the ability to grow in with the surrounding tissue completely have already been developed and represent a technological breakthrough in the field of implantology.
Motivated by this achievement, Emri established the Institute for Sustainable Innovative Technologies (ISIT, 2008), which is the first Slovenian non-profit institution organized in accordance with EU legislation and the EEIG. With its 4500 m2 of research and production space, the Institute provides suitable conditions for integrative cooperation of researchers to achieve a synergy of advanced scientific knowledge required for the transfer of cutting-edge basic skills to an industrial environment. Since October 2008, ISIT provides excellent conditions for the implementation and post-graduate studies to candidates from the University of Ljubljana and foreign students who are involved in the European graduate school EURHEO, which joins 15 elite European universities in this area, including the University of Ljubljana. Professor Igor Emri is one of the founders of the EURHEO graduate school.
Igor Emri’s bibliography in the COBISS database lists 830 bibliographic units, of which more than are 100 scientific papers, 27 invited lectures at conferences, 218 published papers at conferences and 10 book chapters. The Web-of-Science database lists 591Emri’s citations.
Igor Emri is the recipient of several awards and recognitions, including the Boris Kidrič Fund Award, the 2001 Science Ambassador of the Republic of Slovenia, the "Kapitsa Medal" (1997), which is the highest prize of the Russian Academy of Natural Sciences, the "Outstanding Engineer of the Russian Federation " Award (2001), awarded by the Russian Engineering Academy, and the 2010 " B. J. Lazan " Award, awarded by the American Association of The Society of Experimental Mechanics.
Emri was elected Associate Member of the Slovenian Academy of Sciences and Arts in 2005. He is also Full Member of the Russian Academy of Engineering (1996), Russian Academy of Natural Sciences (1997), Slovenian Academy of Engineering (1998), the European Academy of Arts and Sciences (2006) and the European Academy of Sciences (2010)