The Processes and Engineering in Mechanics and Materials (PIMM) laboratory winner of the 2022 Coup de pouce call for projects: Ultra-wideband identification of viscoelastic properties
The project focuses on pooling experimental resources associated with characterizing the viscoelastic behavior of materials, traditionally used in separate scientific communities: dynamic mechanical analysis (DMA) for polymer materials, modal analysis in structural dynamics, guided waves for non-destructive testing, and multi-element probes for ultrasonic imaging.
The merging of different experimental data should enable the identification of stiffness and dissipation properties over an extremely wide frequency spectrum, covering approximately ten orders of magnitude, from 0.01Hz to 10MHz. The intrinsic multi-modality of this characterization and its spectral range would make it a relevant tool for dialogue between scientific communities, providing multi-scale and/or multi-physical information with the aim of advancing knowledge of materials and validating associated theories.
The Coup de Pouce 2022 project, which addresses this issue and is supported by the laboratories of the Fédération Francilienne de Mécanique (F2M), is funding a postdoctoral fellowship that will seek to demonstrate the feasibility of this ultra-wideband analysis on quasi-homogeneous materials obtained by 3D printing using photopolymerization. This initial proof of concept should make it possible to consider applying the approach to heterogeneous structured materials, with the aim of highlighting the influence of different scales on the macroscopic behavior of these metamaterials.
Carriers
Pierre Margerit (PIMM – Arts et Métiers Campus Arts et Métiers Paris)
Nicolas Bochud (MSME – University of Paris-Est Créteil)
Employees
PIMM: Jorge Peixinho, Marc Rébillat
MSME: Giuseppe Rosi
Funding: Coup de Pouce 2022 from the Fédération Francilienne de Mécanique (F2M)
