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Affichage de 4621 à 4630 sur 16309

Poster de conférence

Intégration de transducteurs acoustiques hautes fréquences pour l’imagerie ultrasonore d’interface

Hatem Dahmani, Pierre Campistron, Julien Carlier, Bertrand Nongaillard, Malika Toubal

Fabrication et integration de transducteurs piézoélectriques à base de ZnO qui génèrent des ondes transversales et longitudinales à hautes fréquences (1GHz) sur substrats du silicium. -Réaliser leurs connectiques -Réaliser leurs adaptations d’impedances afin de minimiser le réfléchi électrique et…

10ème Edition Franco-Belge du Mardi des Chercheurs, MdC 2019, Mar 2019, Mons, Belgique. . ⟨hal-03591198⟩

Poster de conférence

Interaction of ultrasonic waves with damage by exploiting the transmission of digital data using guided waves: application to smart vehicle

Rudy Bahouth, Farouk Benmeddour, Emmanuel Moulin, Jamal Assaad

This work aims to compromise between Structural Health Monitoring and information transmission through solid channels mainly for the application of smart vehicles. The purpose of such idea is to transmit digital data of a sensor without using any wires in one hand, and, inspecting defects in many…

10ème Edition Franco-Belge du Mardi des Chercheurs, MdC 2019, Mar 2019, Mons, Belgium. . ⟨hal-03596901⟩

Poster de conférence

Micro-transducers matrix design for structural health monitoring

Hala El Rammouz, Farouk Benmeddour, Jamal Assaad, Emmanuel Moulin, Youssef Zaatar, Ziad Herro

In this work, a two-dimensional (2D) Lithium Niobate (LiNbO3) 36°Y-cut micro-transducers (μTs) matrix design is presented. Two main steps define the fabrication process: electrode deposition and photolithography. These steps are preceded by the optical mask conception, which defines the 2D matrix…

10ème Edition Franco-Belge du Mardi des Chercheurs, MdC 2019, Mar 2019, Mons, Belgium. . ⟨hal-03596969⟩

Poster de conférence

Cross-layer design (PHY/MAC/NET) for vehicular ad-hoc networks (VANETs)

Andy Triwinarko, Iyad Dayoub

The MAC protocol of IEEE 802.11p dedicated to vehicular ad-hoc networks (VANETs) is using Distributed Coordination Function (DCF) that prohibits simultaneous transmissions in the same detection area in order to avoid interference between neighboring vehicles. This prohibition causes a temporary…

10ème Edition Franco-Belge du Mardi des Chercheurs, MdC 2019, Mar 2019, Mons, Belgium. . ⟨hal-03576494⟩

Poster de conférence

Evaporation of nanofluid sessile drops: infrared and acoustic methods to track the dynamic deposition of copper oxide nanoparticles

Ibrahim Zaaroura, Malika Toubal, Hilal Reda, Julien Carlier, Souad Harmand, Rabah Boukherroub, Aurélie Fasquelle, Bertrand Nongaillard

Nanofluids represent a new and innovative class of heat transfer fluids with potential applications in various fields such as coolants in the automobile, electronics, fuel cells, etc. Many studies were performed to analyze and observe the evaporation process of nanofluid sessile droplets and to…

10ème Edition Franco-Belge du Mardi des Chercheurs, MdC 2019, Mar 2019, Mons, Belgium. . ⟨hal-03591170⟩

Poster de conférence

Internet of things system for healthcare applications

Prasaja Wikanta, Andy Triwinarko, Iyad Dayoub, El Hadj Dogheche

The IoT sensor networks used by patients, could support medical staff to diagnose and to monitor continuously. The human body and movement can cause interference which make the sensors retransmit the data. This will increase packet error ratio (PER). Our cross layer protocol take advantages of…

10ème Edition Franco-Belge du Mardi des Chercheurs, MdC 2019, Mar 2019, Mons, Belgium. ⟨hal-03549758⟩

Poster de conférence

Baseline-free repetitive pump-probe experiment for structural health monitoring

Marina Terzi, Lynda Chehami, Emmanuel Moulin, Nikolay Smagin, Vladislav Aleshin

Baseline-free damage localization methods in structural health monitoring are of interest. We conducted a pump-probe experiment on metal plate. PZT patch generates a probe wave at 20 kHz, a continuous pump of 1 Hz is produced by a shaker. The aim was localization of a steel ball pressed against…

10ème Edition Franco-Belge du Mardi des Chercheurs, MdC 2019, Mar 2019, Mons, Belgium. . ⟨hal-03596511⟩

Poster de conférence

Développement des capteurs acoustiques de pression pour des environnements sévères

Hassan Alhousseini, Marc Duquennoy, Christian Courtois, Nikolay Smagin

Le projet CUBISM s’insère dans une démarche d’amélioration de la compétitivité des entreprises actives dans les domaines des bétons réfractaires et du génie civil, deux secteurs d’activité très développés de part et d’autre de la zone transfrontalière. Il existe de la part des industriels une forte…

10ème Edition Franco-Belge du Mardi des Chercheurs, MdC 2019, Mar 2019, Mons, Belgique. . ⟨hal-03596575⟩

Poster de conférence

High voltage excitation and nonlinear transmission of a 16 MHz AlN-based piezoelectric micro-machined ultrasonic transducer

Wen-Juan Liu

This paper reports a 16 MHz AlN-based piezoelectric micro-machined ultrasonic transducer (PMUT) under high voltage excitation. The proposed PMUT array consists of 44x39 elements fabricated on a silicon-on-insulator (SOI) substrate with 1 μm AlN film on 5 μm silicon membrane. The electrical…

10ème Edition Franco-Belge du Mardi des Chercheurs, MdC 2019, Mar 2019, Mons, Belgium. . ⟨hal-03591183⟩

Poster de conférence

Binary sessile drops evaporation: IR and acoustic methods for alcohol concentration tracking at the interface and the surface

Pin Chen, Malika Toubal, Julien Carlier, Souad Harmand, Bertrand Nongaillard, Maxence Bigerelle

Evaporation process of droplets of three pure liquids (water, 1-butanol, and ethanol) and four binary solutions (5 wt % 1-butanol water-based solution and 5, 25, and 50 wt % ethanol−water-based solutions) deposited on hydrophobic silicon substrate was studied under ambient condition. An optical…

10ème Edition Franco-Belge du Mardi des Chercheurs, MdC 2019, Mar 2019, Mons, Belgium. . ⟨hal-03591142⟩