Experience

 
 
 
 
 

Teaching Assistant

École polytechnique

Nov 2017 – Oct 2020 Palaiseau, France
Teaching a project course in experimental acoustics, master 2 level Created quizzes for a MOOC on waves and vibrations. https://coursera.org
 
 
 
 
 

Master Thesis

MWL, KTH & Dyson

Jun 2017 – Oct 2017 Stockholm, Sweden & Malmesburry, United Kingdom
Designing, building and validating a test rig to measure two-port data of small fans
 
 
 
 
 

Research internship

Division of applied acoustics, Chalmers

Apr 2016 – Aug 2016 Göteborg, Sweden
Modal analysis of a resilient tram wheel for investigation of curve squeal
 
 
 
 
 

Internship in the acoustics department

Parrot

Jun 2015 – Aug 2015 Paris, France
Assembled prototypes of new headphones with active noise control Developed an algorithm to mesure the acoustical response of active noise control headphones
 
 
 
 
 

Technical manager

Student music association of École polytechnique

Oct 2014 – Oct 2015 Palaiseau, France
Organising concerts, installing the sound system, studio recording
 
 
 
 
 

HydroContest: naval architecture contest

École polytechnique

Sep 2014 – Jul 2015 Palaiseau, France
Designed and built two boat prototypes Led a group of seven students to the victory http://www.hydrocontest.org

Research

In the present research, we aim at optimizing a dielectric elastomer loudspeaker using optimization algorithms. For this purpose, we need a validated model of the dynamics and sound radiation of this loudspeaker. This is the first part of my work, where I set up a finite element model in FreeFem++ that couples electro-statics, acoustics, hyper-elasticity, and structural vibrations.

In this project I developped, built, and validated a test rig to measure the active two-port scattering matrix and source vector of high speed small fans used in Dyson consumer products.

Publications

Journal articles

Garnell, E., Doaré, O., & Rouby, C. (2020). Coupled vibro-acoustic modeling of a dielectric elastomer loudspeaker. The Journal of the Acoustical Society of America, 147(3), 1812–1821. https://doi.org/10.1121/10.0000930

Garnell, E., Rouby, C., & Doaré, O. (2019). Dynamics and sound radiation of a dielectric elastomer membrane. Journal of Sound and Vibration, 459, 114836. https://doi.org/10.1016/j.jsv.2019.07.002

Garnell, E., Åbom, M., & Banwell, G. (2019). The use of the two-port method to characterize high-speed small fans. Applied Acoustics, 146, 155–163. https://doi.org/10.1016/j.apacoust.2018.11.005

Conference proceedings

Garnell, E., Doaré, O., Rouby, C., 2019. Resonance modes for exterior vibro-acoustic problems, application to a dielectric elastomer loudspeaker. Proceedings of ICA 2019. PDF

Garnell, E., Doaré, O., Rouby, C., 2019. Modèle vibro-acoustique couplé d’un haut-parleur en élastomère diélectrique. Proceedings of CFM 2019. PDF

Garnell, E., Doaré, O., Rouby, C., 2019. Dynamique et rayonnement acoustique d’une membrane d’élastomère diélectrique. Proceedings of CSMA 2019. PDF

Garnell, E., Åbom, M., Banwell, G., 2018. Designing, building and validating a test rig to measure two-port data of small fans. Proceedings of FAN 2018. PDF

Reports

Garnell, E. (2017). Designing, building and validating a test rig to measure two-port data of small fans. Master Thesis, KTH. PDF

Posters

Garnell, E., Doaré, O., Rouby, C., 2019. Resonance modes for exterior vibro-acoustic problems, application to a dielectric elastomer loudspeaker. ICA 2019. PDF

Garnell, E., Doaré, O., Rouby, C., 2018. Dielectric elastomer loudspeakers. JJCAB 2018. PDF

Distinctions

Industrial prize, JJCAB 2018

Prize for a poster presentation at the JJCAB 2018 conference. https://jjcab18.sciencesconf.org

ICA-ASA Young Scientist Conference Attendance Grant

Attendance grant for the ICA 2019 conference. http://www.icacommission.org/YSgrants.html