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. 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

2. 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

3. 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

4. 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

5. 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

6. 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

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

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

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

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

5. 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. http://hdl.handle.net/2078.1/226323

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

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

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

9. Hannard, Florent; Simar, Aude; Maire, Eric; Le Bourlot, C.; Pardoen, Thomas. Étude de l’impact du procédé de friction malaxage sur la rupture ductile dans les alliages d’aluminium. In: book of abstracts - SF2M 2017, 2017, JA0057. http://hdl.handle.net/2078.1/214482

10. Hannard, Florent; Pardoen, Thomas; Maire, Eric; Simar, Aude. Ductilization of aluminium alloy 6056 by friction stir processing. http://hdl.handle.net/2078.1/185506

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