Centre des Matériaux
Pierre-Marie Fourt
Pierre-Marie Fourt
Lecture
Bio-based aerogels: new eco-friendly porous materials for thermal insulation and controlled release
| Area of expertise | Mechanics |
| Doctoral School | ISMME - Systems Engineering, Materials, Mechanics, Energy |
| Supervisor | M. Yazid MADI |
| Co-supervisor | M. Thilo MORGENEYER |
| Research unit | Centre of materials |
| Contact | https://www.mat.minesparis.psl.eu/formation/doctorat/propositions-de-sujets-de-these/http:// |
| Starting date | October 1st 2024 |
| Keywords | Hydrogen embrittlement, mechanical testing, tomography, damage micromechanisms |
| Abstract | In the context of the European industry's decarbonization efforts, 'green' hydrogen emerges as a important component. However, its storage and transportation pose significant challenges due to hydrogen embrittlement affecting numerous metallic materials. This thesis is set within the framework of a Horizon project by the European Union, involving leading European research institutions and steel manufacturers to address these challenges. The core objective of this study is to identify the alterations in material behavior of steels designated for hydrogen transportation and storage when exposed to a hydrogen-rich environment. This investigation will primarily focus on an austenitic stainless steel and a bainitic steel, paying special attention of welds, which are critical points in hydrogen infrastructure.Mechanical testing will be conducted on miniaturized samples, a few millimeters in size, within a hydrogen gas pressure chamber at the Centre des Matériaux. This will facilitate an in-depth examination of hydrogen embrittlement under varying conditions, including strain rate, pre-strain, stress triaxiality, hydrogen pressure. A distinctive aspect of this study is its collaborative nature, with another doctoral project (PHD-TOMO) for in situ mechanical testing under synchrotron microtomography (SOLEIL Synchrotron) and extending its cooperation to all the European Union institutions participating in the project. This collaboration aims to visualize and analyze damage mechanisms within the bulk of the specimens, thereby providing a comprehensive understanding of hydrogen-induced damage. The final goal of PHD-MECA is to integrate the results from mechanical characterizations to construct an elaborate model of hydrogen embrittlement mechanisms in the selected steels, including the critical weld areas. This model will serve as a foundational tool for predicting and mitigating hydrogen-induced failures in the future hydrogen infrastructure, thereby supporting the safe and efficient deployment of hydrogen technologies for a sustainable energy future. |
| Profile | Engineer and / or Master of Science - Good level of general and scientific culture. Good level of knowledge of French (B2 level in french is required) and English. (B2 level in english is required) Good analytical, synthesis, innovation and communication skills. Qualities of adaptability and creativity. Teaching skills. Motivation for research activity. Coherent professional project. Prerequisite (specific skills for this thesis): Applicants should supply the following : • a detailed resume • a copy of the identity card or passport • a covering letter explaining the applicant’s motivation for the position • detailed exam results • two references : the name and contact details of at least two people who could be contacted • to provide an appreciation of the candidate • Your notes of M1, M2 • level of English equivalent TOEIC to be sent to recrutement_these@mat.mines-paristech.fr |
| Funding | Partenariat d'entreprises ou d'associations |
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