Dylan JOUGLARD

En résumé

Entreprises

• SageGlass - Saint-gobain - VIE - Ingenieur R&D

  Faribault, Minnesota 2019 - 2020

• Universite de Trento - Postdoc

  Trente, Italie 2019 - 2019 Ces travaux de recherches ont été réalisés sous la supervision du Professeur Vincenzo Sglavo au sein du département d'Ingénierie de l'Universite de Trento.
  
  Les principaux objectifs visés au cours de ce postdoc ont ete :
  
  - L'étude des propriétés mécaniques et microstructurales de verres renforcés par la technique classique d'échange d'ions.
  - La recherche et l'essai de techniques d'échange d'ions alternatives / assistés.
  - Des recherches bibliographiques
  - La rédaction d'un document de synthèse
  
  Outre l'aspect scientifique, l'immersion dans un environnement universitaire et international m'a permis de développer d'autres compétences notamment linguistiques avec des échanges oraux et écrit en anglais mais aussi en italien.

• Commissariat À L'energie Atomique (cea) - PhD

  2015 - 2018 Subject: Study of borosilicate glasses electrical and dielectrical properties (3 years)
  The context of this study is part of the nuclear waste management especially at the vitrification step in a cold crucible induction melter process. This work is financially supported by CEA, Orano and EDF. This work was performed in the CEA Marcoule laboratories and the CEMTHI-CNRS in Orléans, France.
  The studied materials during this work correspond to borosilicate glass samples used as matrices for conditioning fission products. Their electrical properties have been measured on a wide range of temperatures and frequencies by Eletrochemical Impedance Spectroscopy (EIS) method and their microstructure has been investigated by X-ray diffraction and scanning electron microscopy technics. The aim of this study is to determine the relationship between the electrical properties and the microstructure or the chemical composition of the glasses by understanding the displacement of the charge carriers, mainly identified as the small cations such as Na+ ions.

• Commariat À L'energie Atomique (cea) - Research intern

  2015 - 2015 Subject: Study of the mechanisms involved in the formation of crystals incorporating
  chromium in glasses of nuclear interest (4 months)
  The objective was to use a lattice design of experiments to study the
  glass composition influence, in terms of Fe2O3, ZnO, NiO and Cr2O3, on
  spinel group (AB2O4) formation. The design of experiments is composed
  of nine simplified mixtures of glasses. Each glass has followed the same
  & heat treatment up to 1100°C and two samples, corresponding to two
  different cooling rates (one slow and one faster) have been collected. Both
  were compared by optical and scanning electron microscopy.
  After observing and recording sample images, Image-J software has been used to determine the
  crystallization ratio of each sample to identify the influence of the oxides in the formation of crystals
  incorporating chromium.

• University of Chemistry and Technology - Stagiaire chercheur

  2015 - 2015

• University of Chemistry and Technology (UCT), Prague - The Czech Republic: - Research engineer

  2015 - 2015 Subject: Elastic properties of ceramics and refractories, including porous materials at high temperature (4 months)
  
  This work consists in the investigation of elastic properties of multiphase silicate ceramics with varying
  porosity. Rectangular shape samples have been obtained by pressing mixtures of powders and fired at
  different temperature. Their phase composition has been determined via X-ray diffraction and it has been
  possible to calculate the theoretical density and Young's modulus from the volume fraction of each phase.
  The porosity and the bulk density have been obtained by Archimedes method and geometrical
  measurement. The Young's modulus at room temperature and its evolution during the thermal cycle have
  been determined by the impulse excitation method. The corresponding curves have revealed the influence
  - of the phases on the Young's modulus (modification of the absolute value, evolution during the thermal
  cycle, hysteresis...). The relative Young's modulus has been compared with some prediction models such
  as Hashin-Shtrikmann and exponential ones.

• Medtronic - Stagiaire

  Boulogne-Billancourt 2014 - 2014

• Medtronic Sofamor Danek, Deggendorf - Allemagne - Research intern

  2014 - 2014 Subject: Processing of unused powders for bone substitute manufacturing (4 months)
  
  During artificial spinal column bones production from ceramic raw materials, an important material
  is lost, decreasing the yield of the production. The goal of this research internship was to find a
  way to recycle this lost material and to implement it again in the process. The main difficulty is to get the
  same quality of product as the first round and that meets the requirements in terms of porosity and
  biocompatibility.
  A first improvement was to reduce the quantity of ceramic slurry required to impregnate a total of 15
  polymer skeleton plates by impregnate more plates at once: 2 molds of 7 and 8 plates instead of 3 molds
  of 4 plates and one mold of 3 plates.
  The second improvement was to modify the debinding temperature dwell to reduce the flakiness and
  fragility of the impregnated plates. With these modifications, the yield was improved up to 46.80% in the
  best case against an initial value of 36%.

• Imerys - Stagiaire

  2012 - 2012

• Imerys Tableware, Limoges - France - Research intern

  2012 - 2012 Subject: Development of a vitreous base for glazed engobe coating on terra cotta roof tiles (3 months)
  The first goal of this study was to determine, thanks to a dilatometer, the thermal expansion coefficient
  of several glass frits (representing 80 to 90% of the glazed engobe present in the formulation) in order to
  compare them with some roof tiles 'ones also measured. These characterizations allowed us to know if it
  was possible to correctly enamel the roof tiles and prevent problems during the firing and cooling such as
  coating cracking or flaking.
  Secondly, according to the results, we realized mixtures between frits to observe the thermal expansion
  coefficient's evolution and to be able to control this parameter.
  Finally, we made different tests by spraying, on two kind of support, the solutions prepared at the
  laboratory. In a first time, we sprayed on roof tiles pieces coming from several customers and in a second

Formations

• Université Orléans

  Orleans 2015 - 2018 Doctorat
  
  Physique-chimie des matériaux inorganiques

• ENSCI

  Limoges 2012 - 2015

• IUT Du Limousin Site De Limoges

  Limoges 2010 - 2012 Diplome Universitaire de Technologie
  
  DUT Mesures Physiques, spécialité : Matériaux et Contrôles Physico-chimiques (MCPC)

• IUT Du Limousin DUT MP

  Limoges 2009 - 2012 DUT Mesures-Physiques

Réseau

• Anne FULMINET

• Antoine COULON

• Bastien PELLÉ

• Caroline PILLET

• Marie ARNOULT

• Marine BRUZI

• M. Lénaïc BERTHELOT

• Pierre MEZEIX

• Thomas PERNIN