Publications

• Poster de conférence

Processus de fabrication de pièces céramiques piézoélectriques par FDM, Piezoelectric ceramic parts manufacturing process by FDM

Soufyane Satha, Aymen Mohamed Ben achour, Mohamed Rguiti, Christian Courtois

L'objectif de notre étude est la fabrication de structures piézoélectriques complexes en 3d en céramiques et composites sans plomb, pour des applications capteurs et transducteurs à l’aide de la technique fused deposition modeling “FDM”. Cette technique consiste en l’extrusion à chaud d’un…, The objective of our study is the fabrication of complex 3D piezoelectric structures in lead-free ceramics and composites, for sensor and transducer applications using the fused deposition modeling “FDM” technique. This technique consists of the hot extrusion of a thermoplastic filament consisting…

Mardi des chercheurs 2024, Mar 2024, Mons, Belgique. ⟨10.1016/j.scriptamat.2024.115994⟩. ⟨hal-04544805⟩

• Pré-publication, Document de travail

Frequency-explicit stability estimates for time-harmonic elastodynamic problems in nearly incompressible materials

Théophile Chaumont-Frelet, Serge Nicaise

2024. ⟨hal-04500252⟩

• Article dans une revue

Densification of hydroxyapatite through cold sintering process: Role of liquid phase chemistry and physical characteristic of HA powder

Muthusundar Kumar, Mohamed Aymen Ben Achour, Marie Lasgorceix, Paulo Quadros, Rosica Mincheva, Jean-Marie Raquez, Anne Leriche

Hydroxyapatite is a well-known bioactive material widely employed in bone regeneration applications. Densifying hydroxyapatite at the nanoscale remains challenging with conventional sintering methods. This investigation focuses on the densification of commercially available nano-hydroxyapatite…

Open Ceramics, 2024, 17, ⟨10.1016/j.oceram.2024.100566⟩. ⟨hal-04542434⟩

• Pré-publication, Document de travail

Sur les suites des descendants d'un polygone

Aziz El Kacimi Alaoui, Abdellatif Zeggar

Soient P = [A_1 , ..., A_n ] un n-polygone (avec n ≥ 4) du plan euclidien E et λ un réel dans l'intervalle ]0, 1[. On note P_1 = [A′_1 , • • • , A′_n ] le n-polygone dont les sommets A′_1 , • • • , A′_n sont les λ-barycentres A′_k = (1-λ)A_k + λA_{k+1} , avec 1 ≤ k ≤ n et A_{n+1} = A_1 ; on…

2024. ⟨hal-04444952⟩

• Article dans une revue

Goal-oriented error estimation based on equilibrated flux reconstruction for the approximation of the harmonic formulations in eddy current problems

Emmanuel Creusé, Serge Nicaise, Zuqi Tang

In this work, we propose an a posteriori goal-oriented error estimator for the harmonic A/Phi formulation arising in the modeling of eddy current problems, approximated by nonconforming finite element methods. It is based on the resolution of an adjoint problem associated with the initial one. For…

IMA Journal of Numerical Analysis, 2024, ⟨10.1093/imanum/drad107⟩. ⟨hal-03954215v2⟩

• Poster de conférence

Control of the preferential orientation of the growth of Sr2TiSi2O8 crystals in glass ceramics obtained by crystallization of parent glasses from the SrO – TiO2 – SiO2 – K2O – Al2O3 system

Oussama Zwein, Maurice Gonon, Marc Duquennoy, Rıdvan Yildiz, Sandra Abdelouhab

Belgian Ceramic Society (BCERS) day, Dec 2023, Louvain (Leuven), Belgium. ⟨hal-04429470⟩

• Communication dans un congrès

3D technology and antibacterial post-treatments: the process for the future manufacturing of bone substitutes?

Anne Leriche, Franck Bouchart, Dominique Hautcoeur, Jean-Christophe Hornez, Marie Lasgorceix, Edwige Meurice

Various 3D methods have been more and more used for the manufacturing of macroporous bioceramics for bone substitution applications. It is then legitimate to question the relevance of these methods regarding cellular behavior and recolonization of the ceramic parts in healthy or pathogenic…

BioCAM Workshop, Dec 2023, Mons, Belgium. ⟨hal-04393175⟩

• Communication dans un congrès

3D printing of doped β-tricalcium phosphate bioceramics using robocasting

Nicolas Somers, Marie Lasgorceix, Florian Jean, Nicolas Preux, Cathy Delmotte, Laurent Boilet, Fabrice Petit, Anne Leriche

β-tricalcium phosphate (β-TCP, β-Ca3(PO4)2) is one of the most attractive biomaterials for bone regeneration and β-TCP macroporous scaffolds are highly promising for bone tissue engineering. Robocasting, an additive manufacturing process based on the extrusion of a concentrated ceramic slurry, is…

BioCAM, Dec 2023, MONS, Belgium. ⟨hal-04390681⟩

• Communication dans un congrès

Cold Sintering Process for developing hydroxyapatite ceramic and polymer composite

Muthusundar Kumar, Mohamed Aymen Ben Achour, Marie Lasgorceix, Rosica Mincheva, Jean-Marie Raquez, Anne Leriche

Cold sintering process (CSP) is a non-conventional, low-energy sintering technique that promotes the densification of ceramics in the presence of transient liquids under low temperatures (≤300°C) and pressures (≤500 MPa). Additionally, it provides a new strategy for the co-sintering of ceramic and…

BioCAM Workshop, Dec 2023, Mons, Belgium. ⟨hal-04393180⟩

• Pré-publication, Document de travail

On the cohomological equation of a hyperbolic automorphism

Abdellatif Zeggar

In this paper, we study the discrete cohomological equation (e) : f − f • γ = g associated with a hyperbolic affine automorphism γ : T^d −→ T^d of the torus T d = R^d /Z^d. g being a given C^∞ function and f an unknown function. More precisely, if we denote by E the Fréchet space of all C^∞…

2023. ⟨hal-04319976⟩