Mathieu Gaborit

Mathieu Gaborit
Université du Maine · Acoustical Laboratory of the Université du Maine (LAUM)

PhD

About

15
Publications
3,019
Reads
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55
Citations
Introduction
I'm on a CTER position at the LAUM (CNRS UMR 6613) where I work on material acoustics (3D printed periodic porous media in collaboration with KTH, Stockholm, Sweden), machine learning and numerical methods. I'm also teaching vibrations, programming and numerical methods for acoustics at Le Mans Université both at the bachelor and master's level. Previously, I was a postdoctoral researcher at the ECO2 Centre, M. Wallenberg Lab. at KTH, working on Kelvin Cell packing for acoustic applications.
Additional affiliations
October 2020 - present
KTH Royal Institute of Technology
Position
  • PostDoc Position
September 2019 - October 2020
KTH Royal Institute of Technology
Position
  • Engineer
August 2016 - September 2019
Le Mans Université
Position
  • PhD Student
Education
August 2016 - December 2019
KTH Royal Institute of Technology
Field of study
  • Engineering Mechanics
August 2016 - December 2019
Université du Maine
Field of study
  • Acoustics
September 2014 - July 2016
Université du Maine
Field of study
  • Acoustics

Publications

Publications (15)
Article
The dynamic behaviour of a novel anisotropic cellular micro-structural geometry derived from the basic symmetric Kelvin cell is discussed for varying relative density. The cells are arranged in a cubic array and the dynamic response is studied in a classical seismic mass setup using beam elements to represent the ligaments of the cell. The eigenfre...
Article
Full-text available
In the recent years, our team has been working to identify key aspects of anisotropy on porous media. More than just characterising their anisotropic properties, we're interested in generating cellular media with completely designed anisotropic properties. The results of these studies have partly been published and more are to come. In this present...
Article
Full-text available
The purpose of this work is to check if additive manufacturing technologies are suitable for reproducing porous samples designed for sound absorption. The work is an inter-laboratory test, in which the production of samples and their acoustic measurements are carried out independently by different laboratories, sharing only the same geometry codes...
Article
Full-text available
The properties of the materials used for building sound proofing systems are known to exhibit large variations. These may lead to significant differences in the acoustic responses within a given material batch, particularly when resistive screens are used as a surface component for a multi-layered absorbing panel. In such thin films, it is mostly t...
Article
Full-text available
Simple geometric distortions applied to the isometric Kelvin cell structures, (the tetrakaidecahedron), are shown to result in equivalent materials with anisotropic Hooke's tensors. The equivalent material models are estimated using a recently published inversion method where the 21 independent elastic constants of the Hooke's tensor are identified...
Thesis
Full-text available
The global trend towards quieter environments has been one of the key topics of acoustics research for years. The recent tightening of the regulations on noise exposure as well as the many reports on the impact of noise on human health confirm this situation and stress ever more the need for innovative mitigation strategies. Numerous efforts from m...
Data
The present dataset contains measurements of the acoustic response of screens in an impedance tube with different backings. It includes as well the characterised parameters for the screens and backings.
Article
Full-text available
The present erratum reports an error impacting the figures of a contribution published in 2018 about a simplified model for thin acoustic screens in a transfer matrix context [Gaborit, Dazel, and Göransson (2018). J. Acoust. Soc. Am. 144(1), EL76–EL81]. A mistake in the implementation of the rigid termination condition for the systems under study i...
Conference Paper
Full-text available
Modern sound packages often feature coatings which are, in most cases, made of porous media. Their potentially strong impact on the acoustic performance underscores the need to include them in simulations although their small thickness is an obstacle to precise characterisation. The usual physical models for poro-elastic and porous media are either...
Article
Full-text available
A coupling approach is presented to combine a wave‐based method to the standard finite element method. This coupling methodology is presented here for the Helmholtz equation but it can be applied to a wide range of wave propagation problems. While wave‐based methods can significantly reduce the computational cost, especially at high frequencies, th...
Article
Full-text available
A generalization of the commonly used pressure jump modeling of thin porous layers is proposed. The starting point is a transfer matrix model of the layer derived using matrix exponentials. First order expansions of the propagating terms lead to a linear approximation of the associated phenomena and the resulting matrix is further simplified based...
Thesis
Full-text available
For quite some time, the strive for more efficient acoustic absorbers keeps increasing, driven by a number of psycho-physiological studies on health related dangers of noise exposure. As the global wealth increases and with it the global expectation of quieter living and working environments, manifested in both politics and research, an important m...
Article
Full-text available
The propagation of airborne plane waves in the presence of a meta poroelastic laminate, that is a poroelastic matrix coated with thin elastic layers at its facings and periodically-embedded with inclusions, is studied. Using the Finite Element Method (FEM) only would result in a drastic increase of the degrees of freedom due to the fine mesh requir...
Preprint
A coupling approach is presented to combine a wave-based method to the standard finite element method. This coupling methodology is presented here for the Helmholtz equation but it can be applied to a wide range of wave propagation problems. While wave-based methods can significantly reduce the computational cost, especially at high frequencies, th...

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Projects

Projects (2)
Project
In this project, we use reinforcement learning to teach a software agent to refine a Finite Element mesh. One of the goals is to explore different strategies for refinement based and analyze how a software gradually modifies the discretization
Project
We aim at taking into account uncertainties on interfaces' parameters into account in a numerical model efficiently.