Members

IMMC

Florent Hannard
Post-doctoral researcher
Dr. at UCLouvain on January 24, 2018
Contact

Funding: FRIA
Supervisor(s): Thomas Pardoen, Aude Simar

graduated as a materials science engineer at Université catholique de Louvain (Belgium) in 2013. He is currently doing a PhD thesis (funded by a FRIA grant), started in September 2013 and under the joint supervision of Prof. Thomas Pardoen and Prof. Aude Simar from UCL. His research focuses on the contribution from microstructure heterogeneities on the micromechanisms of ductile damage and cracking in metallic alloys. In order to address these effects on damage accumulation, a combined experimental and a modeling strategy is developed. The experimental strategy relies on in situ tensile testing coupled to 3D microtomography, in situ laminography during sheet loading and a variety of more classical mechanical tests. A cellular automaton type modeling is used to capture particle size distribution and cluster effects on the void nucleation and coalescence processes. His project also involves the use of friction stir processing (FSP) in order to increase the ductility of industrial aluminium alloys of the 6xxx series. From an applicability viewpoint, this method has the potential to locally improve ductility of sheets at locations where forming involves large strains or of structural components at stress concentration points.

IMMC main research direction(s):
Processing and characterisation of materials
Solid mechanics

Keywords:
metallic alloys
micromechanics
hybrid and architectured materials

Research group(s): IMAP
Collaborations: Eric Maire (INSA, Lyon)

Recent publications

See complete list of publications

Journal Articles

1. Lezaack, Matthieu Baudouin; Hannard, Florent; Simar, Aude. Understanding the ductility versus toughness and bendability decoupling of large elongated and fine grained Al 7475 - T6 alloy. In: Materials Science and Engineering: A, Vol. 839, p. 142816 (2022). doi:10.1016/j.msea.2022.142816. http://hdl.handle.net/2078.1/258995

2. Aram Bahmani; Hannard, Florent; J. William Pro; Francois Barthelat. Vibration-driven fabrication of dense architectured panels. In: Matter, Vol. 5, no.3, p. 899-910 (2022). doi:10.1016/j.matt.2022.01.002. http://hdl.handle.net/2078.1/260875

3. Hannard, Florent; Mirkhalaf, Mohammad; Ameri, Abtin; Barthelat, Francois. Segmentations in fins enable large morphing amplitudes combined with high flexural stiffness for fish-inspired robotic materials. In: Science Robotics, Vol. 6, no.57, p. eabf9710 (2021). doi:10.1126/scirobotics.abf9710. http://hdl.handle.net/2078.1/249933

4. Lezaack, Matthieu; Hannard, Florent; Zhao, Lv; Orekhov, Andrey; Adrien, Jérôme; Miettinen, Arttu; Idrissi, Hosni; Simar, Aude. Towards ductilization of high strength 7XXX aluminium alloys via microstructural modifications obtained by friction stir processing and heat treatments. In: Materialia, Vol. 20, p. 101248 (2021). doi:10.1016/j.mtla.2021.101248. http://hdl.handle.net/2078.1/252689

5. Simar, Aude; Hannard, Florent; Lezaack, Matthieu Baudouin; Santos Macias, Juan Guillermo; Zhao, Lv; Pyka, Grzegorz. Extended durability for high strength aluminium alloys. In: The Innovation Patform, Vol. on line (2020). http://hdl.handle.net/2078.1/237842

6. Mallmann, C.; Hannard, Florent; Ferrié, E.; Simar, Aude; Daudin, R.; Lhuissier, P.; Pacureanu, A.; Fivel, M. Unveiling the impact of the effective particles distribution on strengthening mechanisms: A multiscale characterization of Mg+Y2O3 nanocomposites. In: Materials Science and Engineering: A, Vol. 764, p. 138170 (2019). doi:10.1016/j.msea.2019.138170. http://hdl.handle.net/2078.1/220042

7. Yin, Z.; Hannard, Florent; Barthelat, F. Impact-resistant nacre-like transparent materials. In: Science, Vol. 364, no.6447, p. 1260-1263 (2019). doi:10.1126/science.aaw8988. http://hdl.handle.net/2078/225832

8. Abid, Najmul; Hannard, Florent; William Pro, J.; Barthelat, Francois. Exploring the Fracture Toughness of Tessellated Materials With the Discrete-Element Method. In: Journal of Applied Mechanics, Vol. 86, no. 11, p. 111013 (2019). doi:10.1115/1.4044015. http://hdl.handle.net/2078/226171

9. Hannard, Florent; Simar, Aude; Maire, Eric; Pardoen, Thomas. Quantitative assessment of the impact of second phase particle arrangement on damage and fracture anisotropy. In: Acta Materialia, Vol. 148, p. 456-466 (2018). doi:10.1016/j.actamat.2018.02.003. http://hdl.handle.net/2078.1/196094

10. Miotti Bettanini, Alvise; Hannard, Florent; Jacques, Pascal; Pardoen, Thomas; Guilleume, Badinier; Mithieux, Jean Denis; Delannay, Laurent. Residual ferrite in martensitic stainless steels: the effect of mechanical strength contrast on ductility. In: Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing, Vol. 731, p. 495 - 505 (2018). doi:10.1016/j.msea.2018.06.012. http://hdl.handle.net/2078.1/200086

Conference Papers

1. Arseenko, Mariia; Hannard, Florent; Ding, Lipeng; Kashiwar, Ankush; Paccou, E.; Zhao, Lv; Pyka, Grzegorz; Idrissi, Hosni; Lefebvre, William; Villanova, Julie; Maire, Eric; Gheysen, Julie; Simar, Aude. Healing Damage in Friction Stir Processed Mg2Si reinforced Al alloy. 2022 xxx. http://hdl.handle.net/2078.1/259270

2. Gheysen, Julie; Pyka, Grzegorz; Hannard, Florent; Julie Villanova; Nothomb, Nicolas; David Tingaud; Azziz Hocini; Arseenko, Mariia; Simar, Aude. Characterization of the Healability of Aluminium Alloys Produced by Laser Powder Bed Fusion (L-PBF) Using X-ray Nanoholotomography at Synchrotron (ESRF). 2022 xxx. http://hdl.handle.net/2078.1/259269

3. Gheysen, Julie; Pyka, Grzegorz; Hannard, Florent; Arseenko, Mariia; Villanova, Julie; Tingaud, David; Hocini, Azziz; Simar, Aude. Development of a new liquid assisted healable AlMg alloy produced for Laser Powder Bed Fusion (LPBF). 2022 xxx. http://hdl.handle.net/2078.1/260008

4. Gheysen, Julie; Pyka, Grzegorz; Winiarski, Bartlomiej; Hannard, Florent; Arseenko, Mariia; Villanova, Julie; Brinek, Adam; Chirazi, Ali. Correlative tomography-based characterization of a newly developed liquid assisted healable Al alloy. 2022 xxx. http://hdl.handle.net/2078.1/259307

5. Simar, Aude; Hannard, Florent. Architecturation par FSP. 2022 xxx. http://hdl.handle.net/2078.1/259622

6. Gheysen, Julie; Pyka, Grzegorz; Hannard, Florent; Villanova, Julie; Chirazi, Ali; Brinek, Adam; Simar, Aude. Characterization of a newly developed liquid assisted healable Al alloy produced for Laser Powder Bed Fusion (LPBF). 2022 xxx. http://hdl.handle.net/2078.1/259306

7. Gomes Affonseca Netto, Nelson; Hannard, Florent; Zhao, Lv; Charkaluk, Eric; Simar, Aude. Improving fatigue crack growth resistance through local internal stresses of high strength aluminum alloys reinforced by shape memory alloy. 2022 xxx. http://hdl.handle.net/2078.1/260871

8. Gheysen, Julie; Pyka, Grzegorz; Hannard, Florent; Villanova, Julie; Winiarski, Bartłomiej; Simar, Aude. Investigation of the healing ability of a newly developed AlMg alloy produced for Laser Powder Bed Fusion (LPBF). 2022 xxx. http://hdl.handle.net/2078.1/261626

9. Lezaack, Matthieu Baudouin; Hannard, Florent; Simar, Aude. Towards high strength and high ductility 6XXX and 7XXX aluminium alloys. 2021 xxx. http://hdl.handle.net/2078.1/244592

10. Simar, Aude; Hannard, Florent; Lezaack, Matthieu; Han, Sutao; Santos Macias, Juan Guillermo; Zhao, Lv; Gomes Affonseca Netto, Nelson; Arseenko, Mariia; Gheysen, Julie; Nothomb, Nicolas; Idrissi, Hosni; Ding, Lipeng; Kashiwar, Ankush; Pyka, Grzegorz. Friction stir: much more than welding!. 2021 xxx. http://hdl.handle.net/2078.1/252259

Book Chapters

1. Arseenko, Mariia; Gheysen, Julie; Hannard, Florent; Nothomb, Nicolas; Simar, Aude. Self-Healing in Metal-Based Systems. In: Engineering Materials and Processes : Self-Healing Construction Materials , Springer, 2022, p. 43-78. 9783030868796. xxx xxx. doi:10.1007/978-3-030-86880-2_3. http://hdl.handle.net/2078.1/259310

Dissertations

1. Hannard, Florent. 3D characterization, modelling and tailoring of microstructure heterogeneity effects on damage and fracture of 6xxx aluminium alloys, prom. : Pardoen, Thomas ; Simar, Aude, 24/01/2018. http://hdl.handle.net/2078.1/195709