Articles techniques et présentations

Excessive vent noise poses a prevalent challenge in various acoustic applications, significantly impacting the performance and user satisfaction of audio systems. This research investigates the efficacy of noise reduction using a lumped speaker model implemented in COMSOL Multiphysics. ... En savoir plus

Metasurface (MTS) antennas are based on the use of special types of scattering surfaces patterned at a sub-wavelength scale with electrically small metallic dielectric inclusions, usually called unit cells [O. Quevedo-Teruel et al., Journal of Optics, vol. 21, 2019]. The radiation ... En savoir plus

This study demonstrates that a multiphysics model of a LiFePO4/Li half-cell can be applied to simulate the impedance results from an EIS. However, it implies that the double layer capacitance has to be taken into account, since it is responsible of the semi-circle in the impedance ... En savoir plus

Proton exchange membrane fuel cells (PEMFCs) are promising energy converters, offering both sustainability and efficiency. Achieving optimal performance, however, requires a deep understanding of the underlying cause-effect relationships within the functional layers. One effective ... En savoir plus

To achieve a deeper understanding of the mechanism of the Deep Brain Stimulation (DBS) scientists use more and more numerical simulations. DBS inhibits overreaching brain activity via electric pulses that send into the brain by electrodes. Different electrode parameters such as geometry, ... En savoir plus

Induction brazing is a widely utilized joining process in various industries, offering efficient and localized heating for the assembly of diverse components. At Schneider Electric®, this process is used to assemble a silver piece on a copper piece. This work focuses on the advancements ... En savoir plus

A model of a cell counter sensor based on Impedance Spectroscopy (IS) has been implemented in COMSOL Multiphysics. The cell counter is a silicon-based microdevice consisting in 3D electrodes placed in a wide microchannel: cells flow in the microchannel through the electrodes to be ... En savoir plus

For active Structural Health Monitoring (SHM), one popular sensor type is the piezoelectric wafer active sensor (PWAS) due to its multi-purpose application as actuator and sensor and its low cost. It is used to generate a wave field, which interacts with the structure and is recorded by ... En savoir plus

Ultrasonic nondestructive testing (NDT) is extensively used in fields like medicine, oil and gas, and aerospace to inspect materials without causing damage. However, developing experimental setups and prototypes can be costly and time-consuming. This study employs advanced computational ... En savoir plus

Focused Impedance Method (FIM), a new technique of electrical impedance measurement having high sensitivity in the central region, can sense the change in transfer impedance of an object embedded at a shallow depth within a volume conductor of unchanging background conductivity, using ... En savoir plus