rian seghir

Identifiants chercheurs

IdHAL :

rseghir

ORCID :

0000-0002-2946-0161

Présentation

PhD graduate (in 2012) with research background in numerical and experimental mechanics. My work deals with the development of full-field measurement techniques and thermomechanical characterization of metallic and polymeric materials. I focused, in the last years, to the identification of dynamic properties through full-field Ultra-High Speed Imaging and Inverse Methods. Since 2018, I am CNRS Reasearcher (CR) at the Research Institute in Civil and Mechanical Engineering (GeM) of Nantes.

Publications

Communication dans un congrès (20)

Nouvelle stratégie de stéréo-corrélation d'images numériques pour l'étude de la fragmentation dynamique. Fabien Daheron,Julien Réthoré,Rian Seghir,Aurihona Wolff,Gilles Besnard 26e Congrès Français de Mécanique, Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3 - UMR CNRS 7239), Aug 2025, Metz, France Communication dans un congrès hal-05313092v1
Identification inverse de champs de température en pointe de fissure Camille Crusson,Julien Berthe,Bastien Lammens,Gerald Portemont,Rian Seghiret al. 26e Congrès Français de Mécanique, Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3 - UMR CNRS 7239), Aug 2025, Metz, France Communication dans un congrès hal-05313019v1
Experimental characterization of the dynamic toughness of epoxy resin Bastien Lammens,Gerald Portemont,Julien Berthe,Rian Seghir,Julien Réthoré ICEM 2023, Jul 2023, Porto, Portugal Communication dans un congrès hal-04305292v1
Characterization of the dynamic toughness of composite materials by a microscopic approach Bastien Lammens,Gérald Portemont,Julien Berthe,Rian Seghir,Julien Réthoré ICCM23, Jul 2023, Belfast, Ireland Communication dans un congrès hal-04219514v1
Characterisation of the dynamic toughness of composite materials Bastien Lammens,Gerald Portemont,Julien Berthe,Rian Seghir,Julien Réthoré CFM 2022, Aug 2022, Nantes, France Communication dans un congrès hal-03932297v1
Image-based Stress Field Reconstruction in Complex Media Rian Seghir,F Pierron,L Fletcher Residual Stress, Thermomechanics and Infrared Imaging, Hybrid Techniques and Inverse Problems - Proceedings of the 2018 Annual Conference on Experimental and Applied Mechanics, Oct 2019, Greenville, United States Communication dans un congrès hal-03154118v1
Low Cycle Fatigue of a Lost Foam Cast Al-Si-Cu alloy: study of the damage mechanisms with X-ray tomography and Digital Volume Correlation Nathalie Limodin,Long Wang,Nora Dahdah,Ahmed El Bartali,Jean-Francois Witzet al. Fatigue 2018, May 2018, Poitiers, France Communication dans un congrès hal-01807449v1
Isothermal low cycle fatigue of a lost foam cast Al-Si-Cu alloy: study of the damage mechanisms with synchrotron X-ray tomography and Digital Volume Correlation Nathalie Limodin,Long Wang,Nora Dahdah,Ahmed El Bartali,Jean-Francois Witzet al. LCF8 Eighth International Conference on Low Cycle Fatigue, Jun 2017, Dresden, Germany. pp.41 Communication dans un congrès hal-01617612v1
Viscoelastic properties identification through innovative Image-Based DMTA strategy Rian Seghir,Fabrice Pierron CFM 2017 - 23ème Congrès Français de Mécanique, Aug 2017, Lille, France Communication dans un congrès hal-03465321v1
Analysis of fatigue cracks initiation and growth in an Al-Si-Cu alloy using in-situ fatigue tests under synchrotron x-ray tomography coupled with digital volume correlation Nathalie Limodin,Long Wang,Nora Dahdah,Ahmed El Bartali,Jean-Francois Witzet al. International Conf. on Fatigue Damage of Structural Materials XI, Sep 2016, Hyannis, United States Communication dans un congrès hal-01736334v1
Study of damage mechanisms in A319 aluminium alloy by X-ray tomography and Digital Volume Correlation Nora Dahdah,Nathalie Limodin,Ahmed El Bartali,Jean-Francois Witz,Rian Seghiret al. Photomechanics, May 2015, Delft, Netherlands Communication dans un congrès hal-01729131v1
Influence of the casting microstructure on LCF damage mechanisms in an Al-Si alloy using X-ray tomography Ahmed El Bartali,Long Wang,Nora Dahdah,Nathalie Limodin,Jean-Francois Witzet al. 26th Colloquium on Fatigue mechanisms, Mar 2015, Brno, Czech Republic Communication dans un congrès hal-01736324v1
In situ fatigue tests under X-ray tomography: damage mechanisms in a cast Aluminium Silicon alloy Nathalie Limodin,Long Wang,Nora Dahdah,Ahmed El Bartali,Jean-Francois Witzet al. 9th European Solid Mechanics Conference (ESMC 2015), Jul 2015, Leganes-Madrid, Spain. pp.676 Communication dans un congrès hal-01736327v1
Influence of the Casting Microstructure upon the Tensile Behaviour in A319 Al‐Si Alloy Investigated by X‐Ray Tomography and Digital Volume Correlation Long Wang,Nathalie Limodin,Ahmed El Bartali,Julien Réthoré,Jean‐françois Witzet al. Second International Congress on 3D Materials Science, 2014, Annecy, France. pp.73-78, ⟨10.1007/978-3-319-48123-4_12⟩ Communication dans un congrès hal-01668787v1
Cyclic plasticity in duplex stainless steel Rian Seghir,Ahmed El Bartali,Jean-Francois Witz,Philippe Dufrenoy,Eric Charkaluk In Fatigue 2014, Mar 2014, Melbourne, Australia Communication dans un congrès hal-01768660v1
Investigation of the work hardening stages of nickel single crystals from full-field strain measurements X.G Wang,Abdelali Oudriss,Ahmed El Bartali,Jean-Francois Witz,Rian Seghiret al. Plasticité 2014, Apr 2014, Lyon, France Communication dans un congrès hal-01770051v1
Influence of the Lost Foam Casting Microstructure on Low Cycle Fatigue Damage of A319 Aluminum Alloy Nora Dahdah,Nathalie Limodin,Ahmed El Bartali,Jean-Francois Witz,Rian Seghiret al. The 2nd International Congress on 3D Materials Science, Jun 2014, Annecy, France. pp.97-102, ⟨10.1007/978-3-319-48123-4_16⟩ Communication dans un congrès hal-01668786v1
Thermomechanical determination of the CRSS in a polycristal Rian Seghir,X.G Wang,Ahmed El Bartali,Eric Charkaluk,Jean-Francois Witzet al. Photomechanics2013, May 2013, montpellier, France Communication dans un congrès hal-01771079v1
Apport de la texture dans l'analyse des champs thermomécaniques polycristallins Rian Seghir,Jean-Fançois Witz,Eric Charkaluk,Philippe Dufrenoy 10e colloque national en calcul des structures, May 2011, Giens, France. pp.Clé USB Communication dans un congrès hal-00592819v1
Eléments expérimentaux et numériques sur le couplage thermoplastique à l'échelle des grains d'un matériau métallique Rian Seghir,Eric Charkaluk,Philippe Dufrenoy CFM 2009 - 19ème Congrès Français de Mécanique, Aug 2009, Marseille, France Communication dans un congrès hal-03391486v1

Article dans une revue (22)

Thermomechanical couplings of twinning Magnesium over a reversed load path Necdet Ali Özdür,Sefer Can Erman,Laurent Stainier,Rian Seghir,C. Can Aydıner Materials Today Communications, 2025, 46, pp.112563. ⟨10.1016/j.mtcomm.2025.112563⟩ Article dans une revue hal-05391575v1
Determining singular and non-singular Williams' expansion terms from full-field measurements: consideration of structural effects on fracture behaviour Bastien Lammens,Gérald Portemont,Julien Berthe,Rian Seghir,Julien Réthoré Theoretical and Applied Fracture Mechanics, 2024, 130 (104304), ⟨10.1016/j.tafmec.2024.104304⟩ Article dans une revue hal-04446229v2
Experimental characterization of material strain-rate dependence based on full-field Data-Driven Identification Adrien Vinel,Rian Seghir,Julien Berthe,Gerald Portemont,Julien Réthoré International Journal of Impact Engineering, 2024, 194, pp.105083. ⟨10.1016/j.ijimpeng.2024.105083⟩ Article dans une revue hal-04048778v5
Investigation of fracture source mechanisms through full-field imaging and acoustic emission Raphael Heinzmann,Rian Seghir,Syed Yasir Alam,Julien Réthoré Engineering Fracture Mechanics, 2023, 295, pp.109744. ⟨10.1016/j.engfracmech.2023.109744⟩ Article dans une revue hal-04149446v2
Experimental investigation of the alternate recurrence of quasi-static and dynamic crack propagation in PMMA Raphael Heinzmann,Rian Seghir,Syed Yasir Alam,Julien Réthoré International Journal of Fracture, 2023, 242 (2), pp.227-245. ⟨10.1007/s10704-023-00717-8⟩ Article dans une revue hal-03975862v2
Crack branching at low tip speeds: spilling the T Elie Eid,Rian Seghir,Julien Réthoré Journal of Theoretical, Computational and Applied Mechanics, 2023, pp.1-30. ⟨10.46298/jtcam.10172⟩ Article dans une revue hal-03817644v3
Multiscale analysis of brittle failure in heterogeneous materials Elie Eid,Rian Seghir,Julien Réthoré Journal of the Mechanics and Physics of Solids, 2021, ⟨10.1016/j.jmps.2020.104204⟩ Article dans une revue hal-02978612v1
Metrological assessment of multi‐sensor camera technology for spatially‐resolved ultra‐high‐speed imaging of transient high strain‐rate deformation processes Adrien Vinel,Rian Seghir,Julien Berthe,Gérald Portemont,Julien Réthoré Strain, 2021, 57 (4), pp.e12381. ⟨10.1111/str.12381⟩ Article dans une revue hal-03236454v1
An open-source Abaqus implementation of the phase-field method to study the effect of plasticity on the instantaneous fracture toughness in dynamic crack propagation Gergely Molnar,Anthony Gravouil,Rian Seghir,Julien Réthoré Computer Methods in Applied Mechanics and Engineering, 2020, ⟨10.1016/j.cma.2020.113004⟩ Article dans une revue hal-02541808v1
Non-parametric material state field extraction from full field measurements Adrien Leygue,Rian Seghir,Julien Réthoré,Michel Coret,Erwan Verronet al. Computational Mechanics, 2019, ⟨10.1007/s00466-019-01725-z⟩ Article dans une revue hal-02158197v1
A Novel Image-based Ultrasonic Test to Map Material Mechanical Properties at High Strain-rates R. Seghir,F. Pierron Experimental Mechanics, 2017, 58 (2), pp.183-206. ⟨10.1007/s11340-017-0329-4⟩ Article dans une revue hal-04494937v1
Influence of pores on crack initiation in monotonic tensile and cyclic loadings in lost foam casting A319 alloy by using 3D in-situ analysis Long Wang,Nathalie Limodin,Ahmed El Bartali,Jean-Francois Witz,Rian Seghiret al. Materials Science and Engineering, 2016, 673, pp.362-372. ⟨10.1016/j.msea.2016.07.036⟩ Article dans une revue hal-01433827v1
Damage Investigation in A319 Aluminium Alloy by X-ray Tomography and Digital Volume Correlation during In Situ High-Temperature Fatigue Tests Nora Dahdah,Nathalie Limodin,Ahmed El Bartali,Jean-Francois Witz,Rian Seghiret al. Strain, 2016, 52 (4), pp.324-335. ⟨10.1111/str.12193⟩ Article dans une revue hal-01419328v1
A Dedicated DIC Methodology for Characterizing Plastic Deformation in Single Crystals Xiaogang Wang,Jean-François Witz,Ahmed El Bartali,Abdelali Oudriss,Rian Seghiret al. Experimental Mechanics, 2016, 56 (7), pp.1155-1167. ⟨10.1007/s11340-016-0159-9⟩ Article dans une revue hal-01358974v1
Influence of the Casting Process in High Temperature Fatigue of A319 Aluminium Alloy Investigated By In-Situ X- Ray Tomography and Digital Volume Correlation Nora Dahdah,Nathalie Limodin,Ahmed El Bartali,Jean-François Witz,Rian Seghiret al. Procedia Structural Integrity, 2016, 2, pp.3057-3064. ⟨10.1016/j.prostr.2016.06.382⟩ Article dans une revue hal-01612309v1
Controlled mud-crack patterning and self-organized cracking of polydimethylsiloxane elastomer surfaces Rian Seghir,S. Arscott Scientific Reports, 2015, 5 (1), ⟨10.1038/srep14787⟩ Article dans une revue hal-02345522v1
Photo-hardenable and patternable PDMS/SU-8 hybrid functional material: A smart substrate for flexible systems Rian Seghir,S. Arscott Journal of Polymer Science Part B: Polymer Physics, 2015, 53 (18), pp.1281-1291. ⟨10.1002/polb.23773⟩ Article dans une revue istex hal-02345569v1
Mechanically robust, electrically stable metal arrays on plasma-oxidized polydimethylsiloxane for stretchable technologies Rian Seghir,S. Arscott Journal of Applied Physics, 2015, 118 (4), pp.045309. ⟨10.1063/1.4927616⟩ Article dans une revue hal-02345538v1
Microplasticity in Polycrystals: A Thermomechanical Experimental Perspective Eric Charkaluk,Rian Seghir,Laurence Bodelot,Jean-Francois Witz,Philippe Dufrenoy Experimental Mechanics, 2015, 55 (4), pp.741-752. ⟨10.1007/s11340-014-9921-z⟩ Article dans une revue hal-01235785v1
Improvement of thermomechanical full-field analysis of metallic polycrystals using crystallographic data Rian Seghir,Jean-Francois Witz,Eric Charkaluk,Philippe Dufrenoy Mechanics & Industry, 2013, 13 (6), pp.395-403. ⟨10.1051/meca/2012035⟩ Article dans une revue hal-00863628v1
An improved Lagrangian thermography procedure for the quantification of the temperature fields within polycrystals Rian Seghir,Jean-Francois Witz,Laurence Bodelot,Eric Charkaluk,Philippe Dufrenoy Quantitative InfraRed Thermography Journal, 2013, 10 (1), pp.74-95. ⟨10.1080/17686733.2013.785207⟩ Article dans une revue hal-00871131v1
Numerical and experimental estimation of thermomechanical fields heterogeneity at the grain scale of 316L stainless steel Rian Seghir,Laurence Bodelot,Eric Charkaluk,Philippe Dufrenoy Computational Materials Science, 2012, 53 (1), pp.464-473. ⟨10.1016/j.commatsci.2011.08.036⟩ Article dans une revue hal-00636682v1

Autre publication scientifique (1)

Review of &quot;Crack branching at low tip speeds: spilling the T Elie Eid,Rian Seghir,Julien Réthoré,Anna Pandolfi 2023 Autre publication scientifique hal-04114094v1

Thèse (1)

Experimental and numerical investigation of thermomechanical couplings and energy balance in metallic polycrystals Rian Seghir Other. Ecole Centrale de Lille, 2012. English. ⟨NNT : 2012ECLI0004⟩ Thèse tel-00917702v1