.. title: Members .. slug: members .. date: 2018-02-07 11:07:55 UTC+01:00 .. tags: .. category: .. link: .. description: .. type: text Dr. Arnaud Metsue - CRACKHINIT project leader --------------------------------------------- .. image:: /galleries/P1120095.JPG :height: 200 :width: 267 :alt: alternate tex :align: left Arnaud Metsue is assistant professor at the university of La Rochelle since September 2012. He defended its PhD thesis in materials science in January 2010 at the university of Lille dedicated to the dislocation core modeling in mantle minerals within the Peierls Nabarro model (`manuscript download `__). After graduation, he moved to the `Geodynamics Research Center `__ of Ehime University in Japan as post-doctoral fellow from February 2010 to March 2011 and as research fellow from April 2011 to June 2012 to study the effects of Fe incorporation on the thermodynamic and mechanical properties of high- pressure mantle phases. His current major interest is the study of crystalline defects and their interactions with the environment from atomic scale calculations and in particular with ab initio techniques. His recruitment at the university in 2012 has been devoted to the emergence of an atomic scale calculations activity, which have not been developed so far in the Laboratoire des Sciences de l’Ingénieur pour l’Environnement (LaSIE, UMR CNRS 7356). This new thematic in the LaSIE lab will lead to a better understanding and a formalism of the experiments conducted so far, as well in the metallurgy team but also in the cement and concrete materials axis of the laboratory. Although the techniques used in the LaSIE are mainly experimental, the candidate brings profits to the laboratory by the implementation of DFT calculations/experiments approaches as testified to our recent publications. Dr. Abdelali Oudriss -------------------- .. image:: /galleries/P1120097.JPG :height: 200 :width: 267 :alt: alternate tex :align: left Abdelali Oudriss is assistant professor at the university of La Rochelle since September 2014. He is developping new experimental approaches in order to investigate hydrogen - crystalline defects interactions and their impact on the mechanical properties of metals. In particular, his research interests are dedicated to stress corrosion and hydrogen embrittlement processes. He is managing also several research projects in collaboration with companies including Vallourec, Navalgroup, Arianegroup and Safrangroup. Pr. Xavier Feaugas ------------------ .. image:: /galleries/P1120079.JPG :height: 200 :width: 267 :alt: alternate tex :align: left Professor Xavier Feaugas became Research Vice President of the University of La Rochelle (ULR) in 2016. He is a Full Professor in the Department of Physic at the ULR where he has been a faculty member since 2001. He holds the position of director of LaSIE Laboratory, UMR CNRS 7356 since 2012. Xavier Feaugas received his Ph.D. in Mechanics and Material with honours at University of Technology of Compiègne in 1994. Before, He had studied at UTC and graduated as a Master degree in Applied Mechanics and Materials and as a Mechanical Engineer with distinction in 1990. In 1996, He joined the Roberval UTC-CNRS laboratory as Assistant professor and developed researches on Dislocation Patterns during 1996-2001. After being promoted in 2001 to full Professor of Solid State Physics at the University of La Rochelle, he initiated researches on the area of stress corrosion cracking. Since 2001, he has been the leader of DMRS Team focus on the different interactions between metallurgical states, plasticity and surface reactivity. During 2001-2007, he was a manager of a Master of Material Science and from 2008 to 2012 he served as a director of LEMMA laboratory at ULR. Professor Xavier Feaugas has published over three hundred papers, and several collective books in the field of physics, mechanics and metallurgy. His research interests lie in the area of physical bases of solid plasticity and crack initiation with a focus on interactions between plasticity and surface reactivity to understand the inception of hydrogen embrittlement and stress corrosion cracking. The main research topics are: physical bases of solid plasticity and crack initiation (dislocation pattern, slip activity, slip, irreversibility, local approach of fracture …) - Interaction between plasticity and surface reactivity (dissolution, hydrogen adsorption, passivity…) - Multi-physics modeling (ratcheting, cyclic over-hardening, hexagonal slip plasticity, thermo-kinetic modeling, polymer and composite degradation, diffusion …) - Hydrogen Embrittlement/Stress Corrosion Cracking - Crystallographic defects (dislocation, vacancy, grain-boundaries, …), length scales, internal stresses – physical and metallurgy thermodynamic. More recent trend of its works is focus on the different aspects of the interactions between the hydrogen solute and the crystallographic defects formalized in thermodynamic framework. Ms. Caroline Traisnel --------------------- .. image:: /galleries/caro.JPG :height: 267 :width: 200 :alt: alternate tex :align: left Ms. Caroline Traisnel is graduated from Paris Sud university since september 2018. She joined the team in March 2018 for internship and she is now PhD student in our group. Se is clarifying now the elementary diffusion processes of H diffusion into the Ni surfaces from both DFT calculations and electrochemical pulse experiments.