Скачать с ютуб Gerard Vignoles - InterPore2023 Invited Lecture: How the Chemical Vapor Infiltration process can be в хорошем качестве

Gerard Vignoles - InterPore2023 Invited Lecture: How the Chemical Vapor Infiltration process can be

Recorded at Edinburgh International Conference Center on 23 May 2023 Title: How the Chemical Vapor Infiltration process can be optimized for the production of advanced composite and porous ceramics Abstract: Chemical Vapor Infiltration (CVI) is a high-quality and versatile process enabling the preparation of reinforced porous and architecture ceramics as well as Ceramic Matrix Composites (CMC), which are high-temperature materials for aerospace, energy management and industrial systems. Very strong market growth perspectives trigger renewed interest in this process. However, being expensive and/or somewhat difficult to control and optimize, it needs modelling actions at least to provide guidelines for industrial usage. This presentation will describe the process physico-chemistry and its modelling, which has to be multi-physics and multi-scale. The numerical tools range from simple analytical approximate formulae to detailed, image-based modelling of heat & mass transfer coupled to chemical reactions and featuring porous media with morphological evolution. Special attention is paid to (i) the relationship between fibrous media structure and transport properties, including rarefied gas transfer mode, (ii) the potential of using thermal gradients in order to optimise CVI and obtain a fast and efficient infiltration. Bio: Gerard, Louis Vignoles graduated from Ecole Normale Supérieure, Paris and obtained his M. Sc. degree at University Paris 6 and his PhD at University of Bordeaux. He has then been hired as assistant professor at Laboratory of ThermoStructural Composites (LCTS), where he continued his whole career, now as full Professor and Head of this joint Research Unit of CNRS, University of Bordeaux, CEA and the Safran group. Since 2019 he also leads the CNRS National Research Group GDR « (CMC)²: Ceramic Matrix Composites Characterization, Modeling and Design ». His main research research topics are focused on image-based, multi-physics and multiscale physico-chemical modelling with principal applications in the development of CeramicMatrix Composites: processing, mechanical, thermal and environmental behaviour.