Ahmed El Bartali

Publications

Pré-publication, Document de travail (1)

Rapid estimation of microstructure using infrared imaging and solidification modeling in wire-laser directed energy deposition Quentin Dollé,Michèle Bréhier,Emmanuel Berté,Jean-Francois Witz,Christophe Tournieret al. 2026 Pré-publication, Document de travail hal-05516984v1

Article dans une revue (29)

Comparison of Hall-Petch Law with an Elastic Limit Identification Method Using Kinematic Field Measurements Q Hu,A Beaurain,J F Witz,A El Bartali,D Najjar Experimental Mechanics, 2025, ⟨10.1007/s11340-024-01140-3⟩ Article dans une revue hal-05450544v1
Does Atmospheric Corrosion Alter the Sound Quality of the Bronze Used for Manufacturing Bells? Mourad Bentahar,Aline Petitmangin,Caroline Blanc,Anne Chabas,Silvio Montresoret al. Materials, 2023, 16 (13), pp.4763. ⟨10.3390/ma16134763⟩ Article dans une revue hal-04260826v1
Experimental investigation of early strain heterogeneities and localizations in polycrystalline α -Fe during monotonic loading Adrien Berger,Jean-Francois Witz,Ahmed El Bartali,Tarik Sadat,Nathalie Limodinet al. International Journal of Plasticity, 2022, 153, pp.103253. ⟨10.1016/j.ijplas.2022.103253⟩ Article dans une revue hal-03775644v1
2D and 3D Characterization of Damage Mechanisms in A319 Alloy Alexis dos Santos,Jérôme Hosdez,Nathalie Limodin,A. El Bartali,A. Tandjaouiet al. Experimental Mechanics, 2022, ⟨10.1007/s11340-022-00917-8⟩ Article dans une revue hal-03833519v1
Coupling of X‐ray computed tomography and surface in situ analysis combined with digital image correlation method to study low cycle fatigue damage micromechanisms in lost foam casting A319 alloy Long Wang,Nathalie Limodin,Ahmed El Bartali,Eric Charkaluk Fatigue and Fracture of Engineering Materials and Structures, 2021, 44 (4), pp.916-932. ⟨10.1111/ffe.13402⟩ Article dans une revue hal-03157246v1
CristalX: Facilitating simulations for experimentally obtained grain-based microstructures Zoltan Csati,Jean-Francois Witz,Vincent Magnier,Ahmed El Bartali,Nathalie Limodinet al. SoftwareX, 2021, 14, pp.100669. ⟨10.1016/j.softx.2021.100669⟩ Article dans une revue hal-03409334v1
Application of Synchrotron Radiation–Computed Tomography In-Situ Observations and Digital Volume Correlation to Study Low-Cycle Fatigue Damage Micromechanisms in Lost Foam Casting A319 Alloy Long Wang,N. Limodin,Ahmed El Bartali,Jean-Francois Witz,Jean-Yves Buffiereet al. Metallurgical and Materials Transactions A, 2020, 51 (8), pp.3843-3857. ⟨10.1007/s11661-020-05839-5⟩ Article dans une revue hal-02891999v1
Infrared thermography coupled with digital image correlation in studying plastic deformation on the mesoscale level Xiaogang Wang,Jean-Francois Witz,Ahmed El Bartali,Chao Jiang Optics and Lasers in Engineering, 2016, 86, pp.264-274. ⟨10.1016/j.optlaseng.2016.06.001⟩ Article dans une revue hal-01343285v1
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
Numerical investigation of fatigue strength of grain size gradient materials under heterogeneous stress states in a notched specimen Pierre Baudoin,Vincent Magnier,Ahmed El Bartali,Jean-François Witz,Philippe Dufrenoyet al. International Journal of Fatigue, 2016, 87, pp.132-142. ⟨10.1016/j.ijfatigue.2016.01.022⟩ Article dans une revue hal-01279003v1
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
In situ 3D characterization of high temperature fatigue damage mechanisms in a cast aluminum alloy using synchrotron X-ray tomography Sébastien Dezecot,Jean-Yves Buffiere,Alain Köster,Vincent Maurel,Fabien Szmytkaet al. Scripta Materialia, 2016, 113, pp.254-258. ⟨10.1016/j.scriptamat.2015.11.017⟩ Article dans une revue hal-01255815v1
Quantitative infrared thermography applied to subgrain scale and the effect of out-of-plane deformation Xiaogang Wang,Jean-Francois Witz,Ahmed El Bartali,Abdelali Oudriss,Chao Jiang Infrared Physics and Technology, 2015, 71, pp.432-438. ⟨10.1016/j.infrared.2015.06.003⟩ Article dans une revue hal-01204511v1
Application of X-ray microtomography to study the influence of the casting microstructure upon the tensile behaviour of an Al-Si alloy N. Limodin,Ahmed El Bartali,Long Wang,J. Lachambre,Jean-Yves Buffiereet al. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2014, 324, pp.57-62. ⟨10.1016/j.nimb.2013.07.034⟩ Article dans une revue hal-00955455v1
On the influence of microstructural gradients in the fatigue lifetime estimation of a railway axle Pierre Baudoin,Vincent Magnier,Ahmed El Bartali,François Witz,Philippe Dufrenoyet al. MATEC Web of Conferences, 2013, 7, ⟨10.1051/matecconf/20130701007⟩ Article dans une revue hal-01625249v1
K-S Relationship Identification Technique by EBSD Maria-Cecilia Marinelli,M.G. Moscato,Javier W. Signorelli,Ahmed El Bartali,Iris Alvarez-Armas Key Engineering Materials, 2011, 465, pp.415-418. ⟨10.4028/www.scientific.net/KEM.465.415⟩ Article dans une revue hal-00559217v1
Strain heterogeneities between phases in a duplex stainless steel. Comparison between measures and simulation Ahmed El Bartali,Pierre Evrard,Véronique Aubin,S. Herenu,Iris Alvarez-Armaset al. FATIGUE 2010, 2010, 2 (1), pp.2229-2237. ⟨10.1016/j.proeng.2010.03.239⟩ Article dans une revue hal-00761238v1
Influence of boundary conditions on bi-phased polycrystal microstructure calculation Pierre Evrard,Ahmed El Bartali,Véronique Aubin,Colette Rey,Suzanne Degallaixet al. International Journal of Solids and Structures, 2010, 47 (16), pp.1979-1986. ⟨10.1016/j.ijsolstr.2010.03.016⟩ Article dans une revue istex hal-00488072v1
Strain heterogeneities between phases in a duplex stainless steel. Comparison between measures and simulation Ahmed El Bartali,Pierre Evrard,Véronique Aubin,S. Herenu,I. Alvarez-Armaset al. Procedia Engineering, 2010, 2 (1), pp.2229-2237. ⟨10.1016/j.proeng.2010.03.239⟩ Article dans une revue hal-00658483v1
Activated slip systems and microcrack path in LCF of a duplex stainless steel A.C. Marinelli,Ahmed El Bartali,J. Signorelli,Pierre Evrard,Véronique Aubinet al. Materials Science and Engineering: A, 2009, 509 (1-2), pp.81-88. ⟨10.1016/j.msea.2009.01.012⟩ Article dans une revue istex hal-00761283v1
Surface observation and measurement techniques to study the fatigue damage micromechanisms in a duplex stainless steel Ahmed El Bartali,Véronique Aubin,Suzanne Degallaix International Journal of Fatigue, 2009, 31 (11-12), pp.2049-2055. ⟨10.1016/j.ijfatigue.2008.11.003⟩ Article dans une revue istex hal-00761259v1
Microcrack growth and fatigue behavior of a duplex stainless steel M. Balbi,M. Avalos,Ahmed El Bartali,Iris Alvarez-Armas International Journal of Fatigue, 2009, 31 (11-12), pp.2006-2013. ⟨10.1016/j.ijfatigue.2008.12.007⟩ Article dans une revue hal-00411971v1
Study of Fatigue Damage Micromechanisms in a Duplex Stainless Steel by Complementary Analysis Techniques Ahmed El Bartali,Véronique Aubin,Suzanne Degallaix Advanced Engineering Materials, 2009, 11 (9), pp.727-731. ⟨10.1002/adem.200900038⟩ Article dans une revue istex hal-00761445v1
Activated slip systems and microcrack path in LCF of a duplex stainless steel Maria-Cecilia Marinelli,Ahmed El Bartali,Javier W. Signorelli,Pierre Evrard,Véronique Aubinet al. Materials Science and Engineering: A, 2009, 509 (1-2), pp.81-88. ⟨10.1016/j.msea.2009.01.012⟩ Article dans une revue istex hal-00376732v1
Identification and analysis of slip systems activated during low-cycle fatigue in a duplex stainless steel Ahmed El Bartali,Véronique Aubin,Laurent Sabatier,Patrick Villechaise,Suzanne Degallaix Scripta Materialia, 2008, 59 (12), pp.1231-1234. ⟨10.1016/j.scriptamat.2008.07.044⟩ Article dans une revue istex hal-00333440v1
Identification and analysis of slip systems activated during low-cycle fatigue in a duplex stainless steel Ahmed El Bartali,Véronique Aubin,L. Sabatier,Suzanne Degallaix,Patrick Villechaise Scripta Materialia, 2008, 59 (12), pp.1231-1234. ⟨10.1016/j.scriptamat.2008.07.044⟩ Article dans une revue istex hal-00761480v1
Fatigue damage analysis in a duplex stainless steel by digital image correlation technique Ahmed El Bartali,Véronique Aubin,Suzanne Degallaix Fatigue and Fracture of Engineering Materials and Structures, 2008, 31 (2), pp.137-151. ⟨10.1111/j.1460-2695.2007.01207.x⟩ Article dans une revue istex hal-00761463v1

Poster de conférence (1)

Identification of behavior and damage mechanism in fatigue of ferrite-pearlite steel with microstructure gradient Nagesh Narasimha Prasad,Adrien Berger,Ahmed El Bartali,Nathalie Limodin,Jean-François Witzet al. 39èmes Journées de Printemps: Fatigue sous gradient de contrainte, May 2023, Paris, France. 2023 Poster de conférence hal-04105854v1

Communication dans un congrès (31)

Experimental investigation of early strain localizations on polycrystalline α-Fe in cyclic loading. Nagesh NARASIMHA PRASAD,Ahmed El Bartali,Jean-Francois Witz,Nathalie Limodin,Denis Najjar BSSM's 17th International conference on advances in experimental mechanics, British Society for Strain Measurements, Aug 2023, Glasgow, United Kingdom Communication dans un congrès hal-04247957v1
Corrélation d’images stéréoscopiques à l’échelle des grains : Application à la déformation par fatigue plastique d’un acier inoxydable 316L Eddy Caron,Arnaud Beaurain,A. Berger,Ahmed El Bartali,Vincent Magnieret al. 25ème Congrès Français de Mécanique (CFM), Association Française de Mécanique (AFM), Aug 2022, Nantes, France Communication dans un congrès hal-04492268v1
Calibration et reconstruction 3D à l'échelle microscopique de champ mécanique par la méthode polynomiale de Soloff Eddy Caron,Arnaud Beaurain,Jean-Francois Witz,Ahmed El Bartali,Vincent Magnier 25e Congrès Français de Mécanique (CFM 2022), Aug 2022, Nantes, France Communication dans un congrès hal-03812095v1
Damage mechanisms in an aluminium-silicon alloy with a controlled defect Alexis dos Santos,Jérôme Hosdez,N. Limodin,Jean-Francois Witz,Ahmed El Bartaliet al. 17th International Conference on Aluminum Alloys ICAA17, Oct 2020, Grenoble, France Communication dans un congrès hal-03021172v1
Etude des micro-mécanismes d’endommagement associés à un défaut maîtrisé dans une éprouvette en alliage d’aluminium Alexis dos Santos,Amina Tandjaoui,Nathalie Limodin,Ahmed El Bartali,Jean-Francois Witzet al. Matériaux 2018, Fédération Française des Matériaux, Nov 2018, Strasbourg, France Communication dans un congrès hal-02344481v1
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
Characterisation of 3D damage mechanisms of a cast Al alloy during in‐situ high temperature low cycle fatigue tests using Synchrotron X‐ray tomography and digital volume correlation Nora Dahdah,N Limodin,Ahmed El Bartali,Jean-Francois Witz,Eric Charkaluket al. 3rd International Conference on Tomography of Materials and Structures (ICTMS 2017), Jun 2017, Lund, Sweden Communication dans un congrès hal-01669924v1
Influence du gradient de microstructure sur les propriétés thermomécaniques dans un rail du secteur ferroviaire Emmanuel Berte,François Bari,Jean-François Witz,Ahmed El Bartali,Philippe Dufrénoyet al. CFM 2017 - 23e Congrès Français de Mécanique, Aug 2017, Lille, France Communication dans un congrès hal-03465267v1
Application de la tomographie à rayons X à la caractérisation de la microstructure et des mécanismes d'endommagement d'un alliage AlSi7Cu3 Long Wang,Nora Dahdah,Nathalie Limodin,Ahmed El Bartali,Jean-Francois Witzet al. XIIe Colloque Rayons X et Matière, Nov 2017, Lille, France. pp.91 Communication dans un congrès hal-01736338v1
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
Experimental investigation of kinematic and thermal localizations of perforated plate under plastic deformations L Li,C Martel,Ahmed El Bartali,Jean-Francois Witz,Eric Charkaluk The 13th Quantitative InfraRed Thermography Conference (QIRT 2016), Aug 2016, Gdansk, Poland Communication dans un congrès hal-01770119v1
Elasto-Plastic Parameter Identification in a Recrystallized Iron Specimen of Heterogeneous Grain Size Pierre Baudoin,Vincent Magnier,Jean-Francois Witz,Ahmed El Bartali,Philippe Dufrenoyet al. 67th Japanese Joint Conference for the Technology of Plasticity. October 21 – 23, 2016, Saitama, Oct 2016, Saitama, Japan Communication dans un congrès hal-01769482v1
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
Caractérisation du comportement mécanique d'un gradient de microstructure Pierre Baudoin,Vincent Magnier,Ahmed El Bartali,Jean-François Witz,Dufrénoy Philippeet al. CFM 2015 - 22ème Congrès Français de Mécanique, Aug 2015, Lyon, France Communication dans un congrès hal-03444942v1
Numerical and experimental investigation of Lüders bands propagation Pierre Baudoin,Matthieu Mazière,Jean-Francois Witz,Vincent Magnier,Ahmed El Bartaliet al. 25th International Workshop on Computational Mechanics of Materials (IWCMM 25), Oct 2015, Bochum, Germany Communication dans un congrès hal-01771050v1
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
The out-of-plane deformation in pure aluminium oligocrystal and its influence on thermographic measurement X.G Wang,Jean-Francois Witz,Ahmed El Bartali,Philippe Dufrenoy,E. Charkaluk The 12th international conference on the Quantitative InfraRed Thermography (QIRT 2014), Jul 2014, bordeaux, France Communication dans un congrès hal-01771104v1
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
Coupling of experimental measurements to study the influence of microscopic defects on the fatigue damage in A319 Al-Si alloy Long Wang,Nathalie Limodin,Ahmed El Bartali,Eric Charkaluk,Jean-Yves Buffiere FDMD II - JIP 2014 - Fatigue Design & Material Defects, Jun 2014, Paris, France. ⟨10.1051/matecconf/20141204012⟩ Communication dans un congrès hal-01612313v1
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
Elasto-plastic parameters identification trough Finite Element Model Updating Pierre Baudoin,Jean-Francois Witz,Vincent Magnier,Ahmed El Bartali,Philippe Dufrenoyet al. 11th World Congress on Computational Mechanics (WCCM XI), Jul 2014, barcelona, Spain Communication dans un congrès hal-01771055v1
Investigation of grain-scale surface deformation of a pure aluminum polycrystal through kinematic-thermal full-field coupling measurement Xiaogang Wang,Jean-Francois Witz,Ahmed El Bartali,Philippe Dufrenoy,Eric Charkaluk 13th International Conference on Fracture (ICF13), Jun 2013, Pékin, China Communication dans un congrès hal-01771063v1
Microstructural strain heterogeneities during low cycle fatigue Ahmed El Bartali,Nathalie Limodin,Long Wang,Eric Charkaluk LCF7, 7th International Conference on Low Cycle Fatigue, Sep 2013, Aachen, Germany Communication dans un congrès hal-01736267v1
Application of X-ray microtomography to study the influence of the casting microstructure upon the tensile behaviour of an Al-Si alloy Nathalie Limodin,Ahmed El Bartali,Long Wang,J. Lachambre,Eric Charkaluk 1st international conference on tomography of materials and structures; ICTMS 2013, Jul 2013, Ghent, Belgium Communication dans un congrès hal-01736294v1
Multi-scale investigation of various gradient effects in fatigue Pierre Baudoin,Vincent Magnier,Ahmed El Bartali,Jean-François Witz,Philippe Dufrénoyet al. 11e colloque national en calcul des structures, CSMA, May 2013, Giens, France Communication dans un congrès hal-01717845v1
Specimen design for the fatigue lifetime evaluation of a forged material Pierre Baudoin,Vincent Magnier,Ahmed El Bartali,Jean-Francois Witz,Philippe Dufrenoyet al. 13es Journées Internationales de Primptemps (JIP2013), May 2013, Paris, France Communication dans un congrès hal-01771085v1
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

Thèse (1)

Apport des mesures de champs cinématiques à l'étude des micromécanismes d'endommagement en fatigue plastique d'un acier inoxydable duplex Ahmed El Bartali Mécanique [physics.med-ph]. Ecole Centrale de Lille, 2007. Français. ⟨NNT : ⟩ Thèse tel-00254732v1