Publicaciones

• ART

Goal-oriented error estimation based on equilibrated flux and potential reconstruction for the approximation of elliptic and parabolic problems

Emmanuel Creusé, Serge Nicaise, Zuqi Tang

We present a unified framework for goal-oriented estimates for elliptic and parabolic problems that combines the dual-weighted residual method with equilibrated flux and potential reconstruction. These frameworks allow to analyze simultaneously different approximation schemes for the space...

Computers & Mathematics with Applications, 2023, 146, pp.323-338. ⟨10.1016/j.camwa.2023.07.008⟩. ⟨hal-03719266v2⟩

• ART

Shear Piezoelectricity of Poly(L-lactide) Films Manufactured by Extrusion–Orientation: An Insight on Process–Structure–Property Relationships

Mohamed Aymen Ben Achour, Sophie Barrau, Jean-François Tahon, Mohamed Rguiti, Christian Courtois, Birgit Stubbe, Jean-Marie Raquez, Marie-France Lacrampe, Cédric Samuel

Shear piezoelectric properties of uniaxially stretched poly(l-lactide) (US-PLA) films manufactured by an industrially relevant technique (i.e., extrusion–orientation without poling) are investigated, and specific insight on the process–structure–properties relationships is provided. Two...

ACS Applied Polymer Materials, 2023, 5 (12), pp.9761 - 9775. ⟨10.1021/acsapm.3c01419⟩. ⟨hal-04323414⟩

• ART

Effects of Reaction Parameters on the Geometry and Crystallinity of Hydrothermally Synthesized ZnO Nanorods for Bio-Fouling Applications

Abderrahmane Hamdi, Chin Sing Lim, Mohamed Aymen Ben Achour, Ali Ahmed Alshehri, Mervat Alamri, D. Deresmes, Serena Lay-Ming Teo, Denis Remiens, El Hadj Dogheche

In this present work, we have successfully synthesized vertical aligned ZnO nanorod arrays (ZnO NRs) on conductive stainless-steel substrate. These ZnO NRs were obtained by using a low temperature, low cost, and eco-friendly hydrothermal approach. The effect of the sol-gel deposited ZnO seed layer...

Coatings, 2023, This article belongs to the Special Issue Deposition and Applications of Protective Films and Coatings, 13 (1), pp.200. ⟨10.3390/coatings13010200⟩. ⟨hal-03952029⟩

• 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⟩