2024年8月21日、NIMSにて、Prof. Emilio Martinez-Paneda（University of Oxford）によるご講演が第160回構材ゼミとして開催されました。
日時：2024年8月21日(水曜日)15:15～16:30
会場：先進構造材料研究棟 5階カンファレンスルーム
講演者：Prof. Emilio Martinez-Paneda（Department of Engineering Science. University of Oxford）
演題：Recent improvements in the understanding and prediction of hydrogen-assisted failures
開催者：小野 嘉則和田 健太郎（極低温材料グループ）
講演後の集合写真
Prof. Emilio Martinez-Paneda（後列 右から5人目）
Abstract：Hydrogen significantly reduces the ductility, toughness and fatigue crack growth resistance of metals, which leads to premature failures across many industrial sectors and compromises the role of hydrogen as energy carrier in the transition to a low-carbon economy. This talk will overview recent efforts by the speaker and his collaborators in conducting critical experiments to better understand the challenging phenomenon of hydrogen embrittlement and in developing a computational framework capable of predicting hydrogen-assisted failures. Emphasis will be placed on how the combination of phase field and multi-physics modelling has enabled providing a mechanistic, physically-based framework that explicitly resolves the physics underlying hydrogen uptake, transport and embrittlement. Model predictions will be compared with a wide range of experiments on samples exposed to hydrogen-containing environments. Large-scale case studies of engineering interest will also be addressed to demonstrate the potential of multi-physics phase field modelling in enabling Virtual Testing in hydrogen-containing environments. Among others, these will include simulations addressing two case studies of significant technological interest: (1) quantifying the critical pressure at which hydrogen can be transported in natural gas pipelines without leading to structural integrity issues in welds, and (2) conducting reliable virtual hydrogen-assisted fatigue crack growth experiments for arbitrary choices of loading frequency, material, load ratio, pre-charging condition, and hydrogen pressure.
Speaker Bio: Prof Emilio Martinez-Paneda is an Associate Professor at the University of Oxford. Prior to joining Oxford, he was a Reader (Associate Professor) at Imperial College London, where he led an interdisciplinary research group from 2019 to 2023 (2019: Lecturer, 2021: Senior Lecturer, 2023: Reader). Before that, he was an 1851 Research Fellow at the University of Cambridge. Prof Emilio Martinez-Paneda’s research spans a wide range of challenges lying at the interface between mechanics and other disciplines such as biology, geology, chemistry and materials science, being particularly known for his pioneering contributions to the area of hydrogen embrittlement. Prof Emilio Martinez-Paneda has been the PI on over 4.5M GBP of funding in the past five years (ERC Starting Grant, UKRI) and his work has been recognized through multiple awards, including the 2021 UK Young Engineer of the Year (Royal Academy of Engineering), the 2022 Imperial College President’s Medal for Excellence in Research, and the 2021 Gustavo Colonnetti Medal (RILEM)