Keynote lectures
Keynote lectures
Milos Djukic, Professor
Faculty of Mechanical Engineering, University of Belgrade, Serbia
Biography:
Milos B. Djukic is a full professor at the University of Belgrade, Faculty of Mechanical Engineering, Belgrade, Serbia. His research interests include hydrogen embrittlement, hydrogen-materials interactions, corrosion and materials science, materials degradation, and the mechanical behavior of materials. He is the head of the Hydrogen-Materials Interaction Laboratory at the University of Belgrade.
Prof. Djukic is a member of the team for preparation of the Hydrogen Strategy of the Republic of Serbia and an Executive Committee Member of the European Structural Integrity Society (ESIS). He also serves as the chair of ESIS Technical Committee TC21 on Hydrogen Embrittlement and Transport. He is an assistant subject editor for the International Journal of Hydrogen Energy by Elsevier, and a member of the editorial board of eighteen international journals, including Metallurgical and Materials Transactions A and Engineering Failure Analysis.
With over 25 years of teaching and research experience, Dr. Djukic has published 5 books, 10 book chapters, 1 patent, 3 technical solutions, more than 100 peer-reviewed scientific papers in international journals, and 120 conference articles. He has contributed to more than 200 industrial studies, reviews, reports, and expertise. Prof. Djukic scientific research focuses on the fundamental understanding of hydrogen embrittlement mechanisms in metallic materials and hydrogen-materials interactions. He proposed the novel hydrogen embrittlement model in metallic materials based on the synergy of mechanisms. This so-called HELP+HEDE model has been widely accepted and is highly cited with more than 700 citations.
He is included in the 2023 list of the 2% most cited researchers worldwide, published by Stanford University and curated by Elsevier using Scopus data. According to Scopus, he has 1510 citations with an h-index of 15 and has five papers related to hydrogen embrittlement topic cited more than 100 times. According to Google Scholar, he has 2908 citations. He was a keynote/invited speaker at 20 international conferences. He was a mentor, opponent, and member of defense or pre-examination committees for fourteen Ph.D. theses, related mostly to hydrogen embrittlement topics in Belgium, Austria, Finland, France, Israel, Brazil, Australia, and Serbia. Dr. Djukic is an external peer reviewer for scientific projects of five European scientific government agencies in Belgium, Switzerland, Poland, Norway, the Netherlands, and South Africa. He is also a research projects peer reviewer for the European Research Council (ERC).
Title: Hydrogen embrittlement mechanisms synergy in metallic materials: HELP + HEDE model
Abstract:
Filippo Berto, Professor
Sapienza University of Rome, Italy
Biography:
Since fall 2022, Filippo Berto is Professor of mechanics of Materials at Sapienza University of Rome. Previously he has been international chair in fracture mechanics, fatigue, and structural integrity at the Norwegian University of Science and Technology of Trondheim, Norway, since beginning of 2016. He was professor of machine design at the University of Padua, Italy, between 2006 and 2015. He is chairman of the technical committee ESIS TC15 on Structural Integrity of additive manufactured components of European Structural Integrity Society. In 2020 he has been one of the founders of TC18 of ESIS dedicated to the structural integrity of welded structures.
Title: Fatigue assessment of large structures: open issues and possible solutions
Abstract: Fatigue design of large structures is still an open problem which affects designers all over the world. The aim of the talk is to give a brief overview of open issues and possible design solutions that can help the designers to face these challenges. Advanced applications of local approaches will be discussed in this regard with particular attention to energy based approaches.
Dorin Radu, Professor
Faculty of Civil Engineering, Brașov, Romania
Biography:
Dorin Radu is Associate Professor and Vice Dean of the Faculty of Civil Engineering, Transilvania University of Brașov. He holds lectures in Static and Stability of the Structures, Theory of Elasticity and Plasticity and Building Information Modelling. His research interest is in structural integrity, assessment and optimization of existing structural elements, new materials for sustainable constructions, neural networks applied in civil engineering. He is the author of several books, conference papers and large number of articles published in high ranked journals.
Title: Structural integrity assessment – part of a sustainable development
Abstract: The in-service safety assessment of existing steel structures is a complex problem which requires interdisciplinary approaches – from civil engineering application using Eurocodes or European recommendation for fatigue life estimation, up to an in-depth assessment by means of fracture mechanics. The scope of the presentation is to describe possible solutions for assessment of existing steel structures using Engineering Critical Assessment approach and applying to several study cases.
Francesco Iacoviello, Professor
University of Cassino and Southern Lazio, Department of Civil and Mechanical Engineering, Italy
Biography:
Francesco Iacoviello is full professor of Metallurgy at the Faculty of Engineering of the University of Cassino and Southern Lazio. He was President of the Italian Group of Fracture - IGF (2009-2021), President of the European Structural integrity Society – ESIS (2018-2022), Vice-President of the International Congress on Fracture (2017- 2023).
He is Director of the International Congress on Fracture, Editor in Chief of Fracture and Structural Integrity and of Procedia Structural Integrity and Deputy Rector for Services and Infrastructures at the University of Cassino and Southern Lazio. His main research fields concern the analysis of fatigue crack propagation resistance and damaging micromechanisms of stainless steels, ductile cast irons, Al and Ti alloys, shape memory alloys, additively manufactured alloys and Zn coated steels, the investigation of stainless steels hydrogen embrittlement mechanisms and the analysis of stainless steels localized corrosion micromechanisms.
Title: Ductile Cast Irons: porous steels or natural composites?
Abstract: In 1943 and in 1948, the addition of magnesium and of cerium, respectively, allowed to obtain graphite elements embedded in ferritic-pearlitic matrix with mechanical properties that were analogous to those offered by malleable cast iron, but with a reduced production cost. In the last decades, the interest on ductile cast irons (DCIs) strongly increased and many different grades were optimized in order to offer a wider range of properties depending both on the chemical composition and on the heat treatment. The increasing industrial interest on DCIs offered a strong motivation to improve the knowledge of the damaging mechanisms of these grades, considering both their peculiar microstructure (a sort of “natural” composite, with graphite nodules embedded in a metallic matrix) and the different loading conditions (static, quasi static, cyclic etc.). A crucial point in the analysis of the damaging micromechanisms in DCIs concerns the role played by the graphite nodules. The aim of this presentation is to offer an overview of the different proposed damaging mechanisms and the different roles that can be assigned to the graphite nodules.
José A. F. O. Correia, Professor
Faculty of Engineering of the University of Porto, Portugal
Biography:
Title: to be announced
Abstract:
Dragan Bojovic, Dr.
IMS Institute, Belgrade, Serbia
Biography:
Title: to be announced
Abstract:
Bojan Medjo, Professor
Faculty of Technology and Metallurgy, University of Belgrade, Serbia
Biography:
Bojan Medjo is currently Associate Professor at the University of Belgrade, Faculty of Technology and Metallurgy, Department for General Technical Sciences. His research activities are in the fields of mechanics of materials, fracture mechanics, local approach to fracture and integrity assessment of inhomogeneous structures, including the application of the finite element method in these fields. He is author or co-author of two course books and numerous papers published in international and national scientific journals and conference proceedings, as well as reviewer for several international scientific journals.
Title: Non-standard tensile and bending ring specimens for fracture examination of pipeline materials
Abstract: In the previous period, a significant number of studies worldwide have dealt with determination of fracture resistance of the pipeline materials. The main focus is on the thin-walled pipes, because it is typically difficult, or impossible, to fabricate standard fracture mechanics specimens such as Single Edge Notch Bending (SENB) or Compact Tension (CT). Therefore, two non-standard specimen geometries developed in the previous period will be presented and discussed. Both of them are ring-shaped, and the difference is in the loading type: tension in the case of Pipe Ring Notch Tension (PRNT) specimens or bending in the case of Pipe Ring Notch Bending (PRNB) specimens.
Grzegorz Lesiuk, Professor
Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, Poland
Biography:
Member of the Committee on Mechanics and Civil Engineering of the Polish Academy of Sciences branch Wrocław, President of the Polish Group of Crack Mechanics (PGMP), President of the Wroclaw Branch of PTMTS (Polish Society for Theoretical and Applied Mechanics), Grzegorz Lesiuk, Ph.D., DSc. professor of the WUST (Wroclaw University of Science and Technology), has been employed at the Wrocław University of Technology (Faculty of Mechanical Engineering) since 2009. He received his doctoral degree in technical sciences in 2013, and received his habilitation in 2020 at the Faculty of Mechanical Engineering of Wrocław University of Technology. His scientific activities are in the field of mechanics, fracture mechanics and fatigue of materials and structures, as well as new materials and modeling of their durability under cyclic and static loads. In this field, he has more than 120 scientific papers published in renowned national and international scientific and technical journals, as well as more than 70 conference papers and 1 patent. He is a member of the Polish Society of Theoretical and Applied Mechanics and ESIS (European Structural Integrity Society). As part of his teaching activities, he gives lectures and exercises in courses on mechanics, strength of materials, fracture mechanics for students of Wroclaw University of Technology. He is co-author of an academic mechanics coursebook and co-author of a monograph (Springer) on the problems of degradation of materials and structures. For years, he has cooperated extensively with foreign centers in Europe (mainly Porto, Coimbra-Portugal, Oviedo-Spain, Milan, Cassino, Bologna-Italy, Brno, Prague-Czech Republic, Lviv, Kiev-Ukraine, Chemintz, Kaiserslautern-Germany, Trondheim-Norway, Nove Mesto-Slovenia) and abroad (Brazil-São Paulo, Minas Gerais, China-Chengdu, USA-Michigan, Canada-Waterloo, Zabol-Iran, Boumerdes-Algeria). He is a co-organizer of many scientific events of international as well as national scope, i.e. XXICMFM (International Colloquium Mechanical Fatigue of Metals), XVIII KKMP (National Conference on Fracture Mechanics), 1st VCMF (Virtual Conference on Fatigue of Metals), 9th Symposium - Layered Structures, and the creator of a new initiative under ERASMUS BIP courses for summer and winter schools of fracture mechanics and fatigue of materials. He has been repeatedly awarded for his scientific activities: Admission as a member of the Academy of Young Scientists and Artists operating at the Mayor of the City of Wroclaw - nomination received from the Mayor of the City of Wroclaw (2018), Award of the Rector of Wroclaw University of Technology (2018, 2020), International ESIS Award - TC12 (Merit Award) 2019 and 2 international TOP 1% Reviewers (Publons&Web of Science) awards - 2019, Lierati Award (2019) - Emerald Journals Group, 2023 - ESIS Award of Merit - Robert Moskovic Award (Serbia, IV, 2023), - Faculty of Engineering Porto medal University of Porto - 2023. In addition, in his career he has managed numerous projects of national as well as international scope funded by NCBiR, NCN, NAWA.
Title: Strain Energy density parameters as a crack driving force in fatigue crack growth rate analysis
Abstract: The main problem with the description of FCGR (Fatigue Crack Growth Rate) is a strong dependency on stress ratio R. It is clear that the mean stress effect is reflected in various semi-empirical equations. However, in some energy-based models, observing different descriptions of FCGR phenomena using strain energy density parameters like dissipated energy is possible. During the lecture, it will be performed a simplified review of energy models and my research results of FCGR description in several kinds of steels under mode I and mixed mode concerning different stress ratios. As it can be concluded, the main advantage of the energy approach is the R-ratio invariant description of FCGR.