Publications

• ART

Humidity sensing properties of (Na0.5Bi0.5)0.94Ba0.06 TiO3 lead-free ferroelectrics ceramics

Sadia Kennour, Nouara Lamrani, Ahcène Chaouchi, Yannick Lorgouilloux, Mohamed Rguiti, Christian Courtois

In this study, the humidity detection properties of the ceramic with composition (Na0.5Bi0.5)0.94Ba0.06TiO3, noted (NBT-06BT), were investigated. The NBT-06BT ceramic was synthesized by the semi-solid method and characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The…

Science of Sintering, 2023, 55 (3), pp.339-351. ⟨10.2298/SOS221014015K⟩. ⟨hal-04279102⟩

• ART

Energy decay of some boundary coupled systems involving wave\ Euler-Bernoulli beam with one locally singular fractional Kelvin-Voigt damping

Mohammad Akil, Ibtissam Issa, Ali Wehbe

In this paper, we investigate the energy decay of hyperbolic systems of wave-wave, wave-Euler-Bernoulli beam and beam-beam types. The two equations are coupled through boundary connection with only one localized non-smooth fractional Kelvin-Voigt damping. First, we reformulate each system into an…

Mathematical Control and Related Fields, 2023, 13 (1), pp.330-381. ⟨10.3934/mcrf.2021059⟩. ⟨hal-04347023⟩

• ART

Frequency and load effects on rectifier bridges and active circuits on mechanical energy harvested using piezoelectric materials

Youssef El Hmamsy, Chouaib Ennawaoui, Abdelowahed Hajjaji, El Mehdi Laadissi, El Mehdi Loualid, Mohamed Aymen Ben Achour, Oussama Laayati, Ahmed Chebak

Today, with the worldwide surge in the price of oil, the energy issue has become an important topic and the possibility of exploiting ambient energy is receiving renewed attention. Thus in this study, we are interested in the devices of recovery of piezoelectric energy of vibration whose final…

International Journal of Renewable Energy Research, 2023, 13 (2), ⟨10.20508/ijrer.v13i2.13850.g8759⟩. ⟨hal-04491987⟩

• COMM

Properties of bioactive glass for medical application

Halima El Bouami, Assia Mabrouk, Cyrille Albert-Mercier, Claudine Follet, Ahmed Bachar

2nd NANOSMAT Mediterranean 2022, Dec 2022, Ait Melloul, Morocco. ⟨hal-04318759⟩

• COMM

Fabrication of macroporous structures in alumina and beta-TCP by Robocasting

Nicolas Preux, Cathy Delmotte, Nicolas Somers, Florian Jean, Marie Lasgorceix, Anne Leriche, Jean-Pierre Erauw, Fabrice Petit

BCERS 2022, Dec 2022, Mons, Belgium. ⟨hal-04392669⟩

• ART

Evaluation of shear piezoelectric coefficients by a bimorph cantilever technique for extruded and oriented poly( l ‐lactide) films

Mohamed Aymen Ben Achour, Cédric Samuel, Mohamed Rguiti, Sophie Barrau, Christian Courtois, Marie‐france Lacrampe

Uniaxially stretched poly(l-lactide) (US-PLA) films display shear piezoelectric properties of interests for smart applications. However, the measurement of these properties is quite challenging and a simple technique based on bimorph cantilevers is here used. This technique is validated with…

• COMM

Legendre Polynomial Approach for Multimodal Analysis of the Transverse-Type Rectangular Piezoelectric Transformer with Common Ground Electrodes

Joli Randrianarivelo, Faniry Emilson Ratolojanahary, Mohamed Rguiti, Derandraibe Jeannot Falimiaramanana

A Legendre polynomial approach (PA) is proposed to forecast a thin film of transverse-type rectangular piezoelectric transformer (PT) performance with common ground electrodes located on its whole bottom surface, fabricated from a PZT5A (lead zirconate titanate) ceramic material. Based on the…

2nd International Conference on Applied Mathematics, Modeling and Computer Simulation, AMMCS 2022, Aug 2022, Wuhan, China. pp.893-899, ⟨10.3233/ATDE221111⟩. ⟨hal-04489843⟩

• COMM

Modeling and Analysis of Transverse-Type Piezoelectric Transformer By Means of a Polynomial Approach

Joli Randrianarivelo, Faniry Emilson Ratolojanahary, Mohamed Rguiti, Derandraibe Jeannot Falimiaramanana, Lahoucine Elmaimouni, Ismail Naciri

A modeling of thin rectangular bar of transverse-type Piezoelectric Transformer (PT) composed by three regions and made from PZT5A (lead zirconate titanate) ceramic material, is reported. The PT (partially metalized on the top and bottom sides) is dedicated to the galvanic isolation. Using the…

IEEE 7th Southern Power Electronics Conference (SPEC), Dec 2022, Nadi, Fiji. pp.1-6, ⟨10.1109/SPEC55080.2022.10058212⟩. ⟨hal-04491708⟩

• ART

Post-infiltration to improve the density of binder jetting ceramic parts

Qirong Chen, Enrique Juste, Marie Lasgorceix, Guillaume Lefebvre, Christophe Tenailleau, Benjamin Duployer, David Grossin, Fabrice Petit, Anne Leriche

Infiltration of printed bodies with a ceramic suspension is a relevant approach to enhance density and properties of the porous binder-jetted parts. In the present work, significant improvements of alumina parts processed through this combination printing-infiltration was reported. The density of…

Journal of the European Ceramic Society, 2022, 42 (15), pp.7134-7148. ⟨10.1016/j.jeurceramsoc.2022.08.005⟩. ⟨hal-03889846⟩

• ART

Indirect stability of a multidimensional coupled wave equations with one locally boundary fractional damping

Mohammad Akil, Ali Wehbe

In this work, we consider a system of multidimensional wave equations coupled by velocities with one localized fractional boundary damping. First, using a general criteria of Arendt–Batty, by assuming that the boundary control region satisfy some geometric conditions, under the equality speed…

Mathematical News / Mathematische Nachrichten, 2022, 295 (12), pp.2272-2300. ⟨10.1002/mana.202100185⟩. ⟨hal-04346829⟩