Embedded Files
Title: Materials for LH₂ Storage and Transport: Trends, Challenges, and Research Directions
Abstract: The requirements for metallic materials, corresponding processing techniques, and welding methods arising from the need to transport, store, and use alternative fuels in shipping (NH3, Hydrogen) are presented, as required by the need to reduce CO2 emissions in the coming years. For Hydrogen, the storage and transportation conditions (-253°C) necessitate the use of materials resistant to embrittlement due to the presence of Hydrogen and cryogenic temperatures (Hydrogen and Cryogenic Embrittlement) in order to ensure the structural integrity and safety of the construction.
At the same time, there is a need for the design and development of special insulation systems to limit the Boil-off Rate (BoR) within specific ranges that make the transportation of large quantities of Liquid Hydrogen feasible and economically viable for shipping. The current situation, design, and execution of experiments to study embrittlement phenomena in austenitic stainless steels are analyzed, along with experimental and computational studies of phase transformations that occur both during the construction of the corresponding structures and during their operation.
A reference is made to candidate materials, their properties, and their behavior in cryogenic conditions in the presence of Hydrogen. The quantification of Hydrogen diffusion and trapping phenomena within the crystal lattice of steels is presented, along with an approach to understanding the fundamental mechanisms governing these phenomena. Experimental methods used are also analyzed. Additionally, the gaps in the corresponding regulatory framework are discussed, as well as the contribution to the development of specifications for materials and welding processes, in order to ensure compliance with safety regulations for the respective constructions.
Dr Anna Zervaki
Speaker
Dr Anna Zervaki
Asst Professor
National Technical University of Athens (NTUA)
School of Naval Architecture and Marine Engineering, Division of Marine Structures, Shipbuilding Technology Laboratory (STL)
Anna D. Zervaki serves as an Assistant Professor at the School of Naval Architecture and Marine Engineering at the National Technical University of Athens (NTUA). She has 12 years of industrial experience as a Research Engineer/Specialized Technological Services Provider at the company EBETAM S.A., and over 20 years of combined academic experience at the University of Thessaly and NTUA. She was the elected president of the European Federation of Materials (FEMS) from 2022 to 2023, and during the current term (2024-2025), she holds the position of Past President of the federation with participation in the Executive Committee.
Her research interests include: Development and Characterization of Metallic Materials for Marine Structures, Welding of Metallic Materials using Laser and Electron Beam, Wire Arc Additive Manufacturing (WAAM), FSW of Al/Mg alloys, Correlation of Processing-Structure-Properties-Performance of Metallic Materials, Simulation of microstructure evolution in welding/thermal treatments using computational thermodynamics, computational kinetics, and phase field methods, and Failures of Mechanical Elements and Structures.
She is a co-author of a book titled “Failures of Mechanical Elements & Structures”, with 47 scientific publications in international scientific journals, 70 articles in international and national conferences, all in the scientific field of welding and the mechanical behavior of metallic materials in corrosive environments. She has participated in 21 European and National Research programs, 7 of which as the Scientific Supervisor. She has supervised or is supervising 3 PhD theses, 6 Master's Theses, and more than 60 Diploma Theses. She has participated in 21 Scientific Committees of National and International Conferences, two of which as the Chair of the Scientific and Organizing Committees (EUROMAT 2017, EUROMAT 2025).
Page updated
Google Sites
Report abuse