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. 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

2. 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

3. 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

4. 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

5. 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

6. 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

7. 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

8. Hannard, Florent; Castin, Sidney; Maire, Eric; Mokso, Rajmund; Pardoen, Thomas; Simar, Aude. Ductilization of aluminium alloy 6056 by friction stir processing. In: Acta Materialia, Vol. 130, p. 121-136 (2017). doi:10.1016/j.actamat.2017.01.047. http://hdl.handle.net/2078.1/183721

9. Hannard, Florent; Pardoen, Thomas; Maire, Eric; Le Bourlot, C.; Mokso, Rajmund; Simar, Aude. Characterization and micromechanical modelling of microstructural heterogeneity effects on ductile fracture of 6 aluminium alloys. In: Acta Materialia, Vol. 103, p. 558-572 (2016). doi:10.1016/j.actamat.2015.10.008. http://hdl.handle.net/2078.1/166522

Conference Papers

1. 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

2. Hannard, Florent; Maire, Eric; Morgeneyer, Thilo; Pardoen, Thomas; Simar, Aude. Microstructure heterogeneity dominated ductile fracture of 6xxx aluminium alloys. 2020 xxx. http://hdl.handle.net/2078.1/245820

3. Hannard, Florent. Microstructure heterogeneity effects on damage and fracture of 6xxx aluminium alloys. 2020 xxx. http://hdl.handle.net/2078.1/226175

4. Zhen Yin; Hannard, Florent; Francois Barthelat. Ultra-tough and impact resistant glasses with bioinspired architectures. 2019 xxx. http://hdl.handle.net/2078/226178

5. Hannard, Florent; Najmul Abid; J William Pro; Francois Barthelat. Exploring the fracture toughness of tessellated materials with the discrete-element method. 2019 xxx. http://hdl.handle.net/2078/226176

6. Zhen Yin; Hannard, Florent; Francois Barthelat. A Nacre-like Glass that Surpasses the Impact Resistance of Tempered Glass. 2019 xxx. http://hdl.handle.net/2078/226180

7. Pardoen, Thomas; Hannard, Florent; Ismail, Karim; Miotti Bettanini, Alvise; Lecarme, Liza; Maire, Eric; Perlade, Astrid; Mithieux, Jean-Denis; Brassart, Laurence; Delannay, Laurent; Jacques, Pascal; Simar, Aude. Microstructure heterogeneity dominated ductile fracture. 2019 xxx. http://hdl.handle.net/2078.1/226323

8. Mohammad Mirkhalaf; Hannard, Florent; Tao Zhou; Francois Barthelat. Strong and Tough Ceramics Using Architecture and Topological Interlocking. 2018 xxx. http://hdl.handle.net/2078/226172

9. Arseenko, Mariia; Hannard, Florent; Zhao, Lv; Ding, Lipeng; Idrissi, Hosni; Simar, Aude. First steps towards the healable aluminum alloys. 2018 xxx. http://hdl.handle.net/2078.1/214216

10. Hannard, Florent; Simar, Aude; Pardoen, Thomas; Maire, Eric. Quantitative assessment of the impact of second phase particle arrangement on damage and fracture anisotropy. 2018 xxx. http://hdl.handle.net/2078.1/214459

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