rian seghir

41
Documents
Affiliation actuelle
  • Institut de Recherche en Génie Civil et Mécanique (GeM)
Identifiants chercheurs
Contact

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.


Compétences

Research Engineering High strain-rate characterization crystal plasticity infrared thermography Digital Image Correlation Inverse methods

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Publications

Image document

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-04048778 v5
Image document

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-04446229 v2
Image document

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-03817644 v3
Image document

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-04149446 v2
Image document

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-03975862 v2
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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-02978612 v1
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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-03236454 v1
Image document

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-02541808 v1
Image document

Non-parametric material state field extraction from full field measurements

Adrien Leygue , Rian Seghir , Julien Réthoré , Michel Coret , Erwan Verron et al.
Computational Mechanics, 2019, ⟨10.1007/s00466-019-01725-z⟩
Article dans une revue hal-02158197 v1

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-04494937 v1

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 Seghir et al.
Procedia Structural Integrity, 2016, 2, pp.3057-3064. ⟨10.1016/j.prostr.2016.06.382⟩
Article dans une revue hal-01612309 v1
Image document

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 Seghir et al.
Materials Science and Engineering, 2016, 673, pp.362-372. ⟨10.1016/j.msea.2016.07.036⟩
Article dans une revue hal-01433827 v1
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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 Seghir et al.
Strain, 2016, 52 (4), pp.324-335. ⟨10.1111/str.12193⟩
Article dans une revue hal-01419328 v1
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A Dedicated DIC Methodology for Characterizing Plastic Deformation in Single Crystals

Xiaogang Wang , Jean-François Witz , Ahmed El Bartali , Abdelali Oudriss , Rian Seghir et al.
Experimental Mechanics, 2016, 56 (7), pp.1155-1167. ⟨10.1007/s11340-016-0159-9⟩
Article dans une revue hal-01358974 v1
Image document

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-02345522 v1

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-02345569 v1
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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-02345538 v1
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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-01235785 v1
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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-00871131 v1

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-00863628 v1
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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-00636682 v1
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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-04219514 v1
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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-04305292 v1
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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-03932297 v1
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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-03154118 v1

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 Witz et al.
Fatigue 2018, May 2018, Poitiers, France
Communication dans un congrès hal-01807449 v1
Image document

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-03465321 v1
Image document

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 Witz et al.
LCF8 Eighth International Conference on Low Cycle Fatigue, Jun 2017, Dresden, Germany. pp.41
Communication dans un congrès hal-01617612 v1

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 Witz et al.
International Conf. on Fatigue Damage of Structural Materials XI, Sep 2016, Hyannis, United States
Communication dans un congrès hal-01736334 v1

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 Witz et al.
26th Colloquium on Fatigue mechanisms, Mar 2015, Brno, Czech Republic
Communication dans un congrès hal-01736324 v1
Image document

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 Seghir et al.
Photomechanics, May 2015, Delft, Netherlands
Communication dans un congrès hal-01729131 v1
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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 Witz et al.
9th European Solid Mechanics Conference (ESMC 2015), Jul 2015, Leganes-Madrid, Spain. pp.676
Communication dans un congrès hal-01736327 v1
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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 Witz et 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-01668787 v1

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-01768660 v1
Image document

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 Seghir et 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-01668786 v1

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 Seghir et al.
Plasticité 2014, Apr 2014, Lyon, France
Communication dans un congrès hal-01770051 v1

Thermomechanical determination of the CRSS in a polycristal

Rian Seghir , X.G Wang , Ahmed El Bartali , Eric Charkaluk , Jean-Francois Witz et al.
Photomechanics2013, May 2013, montpellier, France
Communication dans un congrès hal-01771079 v1
Image document

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-00592819 v1
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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-03391486 v1