Research

Funded research projects

  • ANR PRC MAX-OASIS (2019-2023), leader: N. Auffray (MSME), budget: 175k€
  • PEPS CNRS (2019), leader: R. Dendievel (SiMaP), budget: 6k€
  • AAP R&T CNES (2017-2019), leader: J. Dirrenberger (PIMM), budget: 46k€
  • ANR JCJC SCOLASTIC (2016-2021), leader: J. Dirrenberger (PIMM), budget: 250k€
  • ANR PRCE ALMARIS (2016-2020), leader: C. Davoine (Onera), budget: 156k€
  • Avant-projet CNES (2016), leader: J. Dirrenberger (PIMM), budget: 12k€
  • Contrat Chaire LH ENPC (2015-2019), leader: J. Dirrenberger (PIMM), budget: 30k€
  • F2M Grant APHORISME (2014), leader: J. Dirrenberger (PIMM), budget: 50k€
  • HESAM Synergie 2014, leader: J. Dirrenberger (PIMM), budget: 120k€

Architectured materials

Our group develops new methods for designing architectured materials based on computational homogenization and micromechanics. We are mostly focusing on metallic architectured materials produced by additive manufacturing techniques, as well as metallic sheets architectured by localised laser treatment.

Additive manufacturing  & innovative processing

Additive manufacturing is a natural candidate for developing architecture materials. However, controlling the process-induced microstructure is of prime importance as it will prescribed the physical behaviour of the material, as well as the overall response of the structure. This is thus a major challenge from a materials science viewpoint, along with post-treatment of 3D-printed parts (hot isostatic pressure, chemical etching, heat treatment…). We currently work on the additive manufacturing of both polymers and metals, for both aerospace and biomedical applications. We also work with ceramics and composites such as concrete, but within the scope of large-scale additive manufacturing.

Topology optimization & systematic architecturation

New processing techniques push engineers to rethink entirely the way we design components and structures. As a matter of fact, the aim of additive manufacturing is not to mimic classical processes, but to innovate by introducing new functions in materials induced by intricate geometries enabling structural effects at the microscale. Computational tools are a necessity in order to reach a systematic architecturation of materials and structures. We work on incorporating materials information in such tools.

Nonlinear mechanics, fatigue & durability

Predicting the durability of materials within structures is a major industrial challenge. This problem is magnified in the context of additive manufacturing, and architectured materials which often present holes and geometric stress concentrators, for lightweight purposes. By adopting a holistic approach based on experimental, computational, and theoretical investigation, we are studying the durability of advanced materials such as dual-phase steels and additively manufactured lattice-structures.