Professor Emeritus, Faculty of Mechanical Engineering, University of Belgrade, Serbia. Visiting professor at Drexel University, USA, 1999-2002. Assistant Minister for Science and Technology Development in Serbian government 2003-2006. Vice-rector for international cooperation, University of Belgrade, 2006-2009. Director of Innovation Center of the Faculty of Mechanical Engineering in Belgrade since 2006. He has been teaching since 1979 at the Faculty of Mechanical Engineering, University of Belgrade, mainly Engineering Materials, Welding, Numerical Methods, Fracture Mechanics, Structural Integrity. Advisor for 60 D.Sc. thesis, half of them related to Welding. He published 138 papers in WoS journals, 313 papers in Scopus database with 1881 citations (h=21), more than 300 papers at prestigious international conferences, number of textbooks and monographs.
He was coordinator for 10 national projects and 12 international projects in the scope of EUREKA, bilateral, H2020, FP7, COSME and Interreg programs. He is the President of Serbian Structural Integrity and Life Society and Editor-in-chief of Structural Integrity and Life Journal (Scopus, eSCI), the Vice-president of European Structural Integrity Society (ESIS), member of editorial boards and reviewer of a number of prominent world journals in Fracture Mechanics, and the Chairman of European Conference on Fracture (ECF22), Belgrade, 2018. He has been the guest editor of special issues of Engineering Failure Analysis, Engineering Fracture Mechanics, Theoretical and Applied Fracture Mechanics and International Journal of Fatigue.
Prof. Sedmak is longstanding member of prominent societies, such as ESIS, AWS and ASME, also honorary professor at Brasov University, Romania, since 2016 and foreign member of Hungarian Academy of Engineering Sciences since 2017, also member of Serbian Academy of Engineering Sciences since 2012. He delivered many invited lectures and seminars worldwide, (Duke University, Durham, Drexel University, Filadelfija, USA, Technical Faculty University of Maribor, Technical University in Tripoli, Libya, Brasov University, Romania, Miscolc University Hungary). He was one of the founders of Department for Welding and Welded Structures at the Faculty of Mechanical Engineering, University of Belgrade, Serbia, where he teaches master and doctoral courses, including foreign students.