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Sébastien Joannes

Sébastien Joannes

Senior researcher (HDR)

Center · CMAT

Discipline(s)
Solid Mechanics
Topic(s)
Circularity, Hydrogen, Polymer, Recycling, Sustainable Development

Keywords

Team

MEM - Mécanique Expérimentale et Matériaux

Biography

Sébastien Joannès is a HDR Research Director and Deputy Head of the Mechanics and Materials Department at the Centre des Matériaux of Mines Paris – PSL. Specialized in polymer matrix composites, he is recognized for his expertise in studying the behavior of fibrous reinforcements at the scale of elementary fibers. He explores their damage and fracture mechanisms by combining cutting-edge experimental approaches, Bayesian inference, and modeling.

As an active participant in European research, he led the Horizon 2020 FiBreMoD project at his institution and currently serves as Scientist-in-Charge for Mines Paris – PSL in the FibReLoop doctoral network, dedicated to the circular economy of composites.

Additionally, as co-head of the Mechanics and Materials Option and involved in the TTI.5 institute (The Transition Institute 1.5), Sébastien Joannès actively contributes to training a new generation of experts prepared for the climate and industrial challenges of tomorrow.

Publication(s)

Teaching

Mechanics of Materials and Structures (PI MECAERO)

Lecturer

Elective Course Period (October and January)

Course Director

ATHENS - MP12 - Music, Science, History

Course Director

This course establishes links between the scientific, technical, and historical aspects of music theory, musical instruments, and musical perception. It combines (psycho)acoustics, mechanics, materials science, the history of musical instruments, and the history of tonal and modal music, and includes visits to the Cité de la Musique museum.

Materials Science and Engineering (MSE) track

Course Director

The Second Year: Discover, Observe, Experiment The two-week elective period is devoted to a mini-project in pairs, in one of the School’s two laboratories (the Materials Center in Evry or the Materials Processing Center in Sophia-Antipolis, with more than 70 faculty members supporting the elective). The topics revolve around a specific industrial project. The focus is on discovering physical, chemical, and mechanical phenomena—and on quantifying them. A detailed report and an oral presentation allow students not only to develop communication skills but, above all, to learn from one another. Some topics include: investigation of a railway brake failure, investigation of non-conformity in metal seals, welding (instrumented testing and numerical modeling), study of foam formation mechanisms for automotive seats, aerogel formation for super-insulation or biomedical applications... The 3rd Year: Understanding, Making Choices, Optimizing The two highlights of the third year are the elective month (starting at the beginning of the academic year) and the personal project, which takes up the rest of the time dedicated to the elective. The elective month: “Materials and Engineers” in a specific industrial sector. The elective month is devoted to materials engineering and focuses on a specific industrial sector (2004 and 2005: the automotive industry; 2006 and 2007: aerospace; 2008 and 2009: construction; 2010 and 2011: energy; 2012 and 2013: healthcare; 2014 and 2015: aerospace). The wide range of activities fosters hands-on learning and helps build a cohesive group, enriched by the diverse backgrounds and personalities of both students and teachers: industrial tours: the development, processing, and use of materials in the chosen field; a few lectures given by industry experts; “Industrial Discovery” mini-projects: 5 days in groups of 2 to 4 students at an industrial site, supervised by on-site engineers, working on an engineering problem; a written report (for internal company use) and an oral presentation allow the different groups to share the knowledge and experiences they gained in the field; a few “classes”—which are actually sessions to prepare for the visits and “debriefing” sessions in the form of Q&A sessions with faculty regarding the lectures and industrial visits. The elective project: applying methods and knowledge to solve an industrial problem. These individual elective projects form the backbone of the third year. Defined as early as October, in accordance with each student’s preferences, they focus on a clearly identified industrial problem. Lasting at least 4 months (a total of 8 months for Polytech students in the “specialized track”), they take place at an industrial site under dual supervision: engineers from the company on one hand, and a faculty researcher from one of the School’s two “Materials” laboratories on the other. The emphasis is on understanding the underlying phenomena and solving the practical problem at hand. Some representative elective topics covered in recent years: selection of a material for a Formula 1 racing car component (Renault, Viry-Châtillon); modeling of thin films deposited on glass (Saint-Gobain, Thourotte); selection and sizing of a shock-absorbing foam (SNCF, Le Mans); feasibility of coating pistons via plasma spraying (Toyota, Evry—Belgium – Japan); an innovative steel continuous casting process (Vallourec, Aulnoye-Aymeries / Brazil); optimization of the fiber-reinforced polymer injection molding process (Bosch, Germany); analysis of medieval gilded enameled glass (Laboratoire des Musées de France, Paris); prediction of fracture properties of steels for gas pipelines (ArcelorMittal, Ghent, Belgium). acceptance criteria for forging defects (PSA, La Garenne-Colombes); painting defects on automotive plastic body parts (Mécaplast, Monaco) welding of superalloy parts for space launch vehicles (Snecma, Vernon) improvement of non-destructive testing of power plant components (EDF, Saint-Denis) decontamination of concrete used in civil engineering for nuclear power plants (Bouygues, St-Quentin / CEA, Marcoule) Improving the manufacturing of composite parts for the aerospace industry (Dassault, Argenteuil) Material selection for endoscopic probes with integrated microscopes (Mauna Kea Technologies, Paris) Key features of the track: Hands-on experience! The track includes very few courses in the traditional sense: knowledge and skills are acquired through courses offered to all students (core curriculum, specialized courses) and, above all, by sharing each student’s real-world experiences. It’s about experimenting on your own and as part of a team (with dual mentoring by an industrial engineer and a faculty researcher). Intensive group work The diversity and number of students in the track allow everyone to learn from and with one another. This provides effective training in self-directed learning methods that engineers will use throughout their careers to remain key players in their fields of expertise and take control of their professional development. Interdisciplinary Approach The field of materials lies at the intersection of disciplines such as physics, chemistry, mechanics, applied mathematics, and numerical modeling. Elective projects often include both an experimental component and a modeling component, providing a well-rounded education in materials science. The track covers ceramics, “plastics,” metals, and alloys, as well as ancient artifacts (archaeology) and the latest innovations (“biological” steels, bio-based and non-bio-based aerogels, etc.).

PhD supervision

  • 2025 Industrial recycling of end-of-life fibrous composite parts JOSHI Atharva
  • 2025 Characterization of the variability of recycled composites and their constituents CHANDRAN Lekhana
  • 2023 Experimental study and modeling of the fatigue/creep behavior of thermoplastic matrix composites LAMMING François
  • 2022 Sustainability and life cycle of the electric machine, at the heart of the challenges of a low-carbon transition SAHAOUI Mohamed
  • 2022 Relationship between Microstructure and Mechanical Properties of a Developing Continuous Alumina Fiber REDONNET Juliette
  • 2018 Understanding at the filament scale, the links between implementation/structure/properties of aramid fibers RICHARD Clotilde
  • 2017 Effect of porosity in thick-walled composite reservoirs: Experimental observations and numerical modeling ROJEK Jan
  • 2017 Probabilistic monofilament characterization to improve stochastic modeling of the strength of unidirectional composites ISLAM Faisal
  • 2017 Advanced development of hybrid composite materials from glass and carbon fibers RAJPUROHIT Ashok
  • 2017 Towards 1:1 scale simulation of the burst of a Type IV tank using multiscale modeling and ergodic theory WIDJAJA Martinus Putra
  • 2016 Damage analysis and fatigue-creep criterion for reinforced polyamides GILLET Stéphane
  • 2016 Estimation of the transverse elastic behavior of unidirectional composites, application to the study of the role of local morphological fluctuations BLONDEL Jennifer
  • 2014 Analysis and modeling of the mechanical behavior of a carbon fiber-reinforced composite subjected to complex loadings RASSELET François
  • 2013 On the dynamic behavior of woven composite materials with polyamide matrix COUSSA Fabien
  • 2013 Effect of microstructural variability on the behavior of a UD glass/PA11 composite: from experimental characterization to multi-scale modeling POULET Pierre-Alexis
  • 2011 Longitudinal and transverse mechanical behavior, micro-mechanisms of deformation and the effect of temperature on Kevlar 29 fiber WOLLBRETT-BLITZ Judith
  • 2011 Multi-scale estimation of the effective properties of a composite considering tow misalignments due to forming LEBRUN Adrien
  • 2010 Experimental and numerical analysis of matrix damage in a composite material: Case of a thermoplastic pultruded reinforced with glass fibers CAYZAC Henri-Alexandre
  • 2010 Composite-polymer assemblies after atmospheric plasma treatment of the composite: mechanical characterization and modeling PHONGPHINITTANA Ekkarin
  • 2008 Study and modeling of the hygrothermal aging of short glass fiber reinforced polyphthalamides MAZE Laurent