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Affichage de 141 à 150 sur 1038

Article dans une revue

Stabilization of the generalized Rao‐Nakra beam by partial viscous damping

Mohammad Akil, Zhuangyi Liu

In this paper, we consider the stabilization of the generalized Rao‐Nakra beam equation, which consists of four wave equations for the longitudinal displacements and the shear angle of the top and bottom layers and one Euler–Bernoulli beam equation for the transversal displacement. Dissipative…

Mathematical Methods in the Applied Sciences, 2023, 46 (2), pp.1479-1510. ⟨10.1002/mma.8591⟩. ⟨hal-04347014⟩

Article dans une revue

How are alkali-activated materials impacted by incorporating low viscosity organic liquids?

Charles Reeb, Catherine A. Davy, Matthieu de Campos, Jérôme Hosdez, Christel Pierlot, Cyrille Albert-Mercier, David Lambertin

This research determines an adequate alkali-activated material (AAM) for the incorporation of huge amounts (20 or 40% vol) of low viscosity organic liquids (LVOL), e.g. for waste stabilization/solidification. The selected AAM are either based on high-Ca content blast furnace slag, or on low Ca-…

Materials and structures, 2023, 56 (1), pp.11. ⟨10.1617/s11527-022-02089-2⟩. ⟨hal-04491967⟩

Article dans une revue

Mg2+, Sr2+, Ag+, and Cu2+ co-doped beta-tricalcium phosphate: Improved thermal stability and mechanical and biological properties

Nicolas Somers, Florian Jean, Marie Lasgorceix, Giovanni Urruth, Sandra Balvay, Claire Gaillard, Laurent Gremillard, Anne Leriche

β-tricalcium phosphate (β-TCP, β-Ca3(PO4)2) is an attractive biomaterial for bone repair applications. However, its sintering and mechanical properties are limited by a problematic phase transition to α-TCP. Cationic doping of β-TCP is able to postpone the formation of α-TCP allowing higher…

Journal of the American Ceramic Society, 2023, 106 (7), pp.4061-4075. ⟨10.1111/jace.19093⟩. ⟨hal-04103197⟩

Article dans une revue

Effect of dimensional variations on the manufacturing process and the 3D shrinkage ratio of stereolithographic dental alumina ceramics.

Corentin Denis, Lieven Robberecht, Jérôme Delattre, Etienne Deveaux, Jean-Christophe Hornez, Marion Dehurtevent

The purpose of the present study was to evaluate the influence of height and length variations of alumina ceramics manufactured by stereolithography on deformations caused by the manufacturing process and on the 3D shrinkage ratio to control the final dimensions and improve the adaptation of…

Dental Materials Journal, 2023, Dental Materials Journal, ⟨10.4012/dmj.2022-102⟩. ⟨hal-04191001⟩

Article dans une revue

Fabrication of doped β-tricalcium phosphate bioceramics by Direct Ink Writing for bone repair applications

Nicolas Somers, Florian Jean, Marie Lasgorceix, 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 very promising for both cell proliferation and mechanical support. The Additive Manufacturing (AM) process called Direct Ink Writing (DIW), based on the…

Journal of the European Ceramic Society, 2023, ⟨10.1016/j.jeurceramsoc.2022.10.018⟩. ⟨hal-03820943⟩

Article dans une revue

Improvement of Metal-Doped β-TCP Scaffolds for Active Bone Substitutes via Ultra-Short Laser Structuring

Íris Soares, Lamborghini Sotelo, Ina Erceg, Florian Jean, Marie Lasgorceix, Anne Leriche, Maja Dutour Sikirić, Katarina Marušić, Silke Christiansen, Albena Daskalova

Various efforts have been made to develop antibacterial biomaterials capable of also sustaining bone remodulation to be used as bone substitutes and reduce patient infection rates and related costs. In this work, beta-tricalcium phosphate (β-TCP) was chosen due to its known biocompatibility and use…

Bioengineering, 2023, 10 (12), pp.1392. ⟨10.3390/bioengineering10121392⟩. ⟨hal-04414994⟩

Article dans une revue

Morphological, piezoelectric and dielectric properties of piezoelectric lead-free ceramic Bi4Ti3O12 for energy harvesting applications: milling process effects

Meryiem Derraz, Chouaib Ennawaoui, Mohamed Aymen Ben Achour, Abdelowahed Hajjaji, El Mehdi Laadissi, Younes Chhiti, Az Eddine Azim, Charafeddine Jama

A lead-free piezoelectric ceramic, Bismuth titanate (Bi4Ti3O12), is synthesized as an environmentally friendly alternative to the commonly used Lead Zirconate Titanate (PZT). This study focuses on investigating the effects of processing conditions on the morphological and structural properties of…

Matériaux et Techniques, 2023, Matériaux & Techniques, 111 (5-6), pp.502. ⟨10.1051/mattech/2024005⟩. ⟨hal-04526617⟩

Rapport

Thermodynamically consistent modelling of the corrosion of iron in the context of deep subsurface nuclear waste repositories

Clément Cancès, Claire Chainais-Hillairet, Benoît Merlet, Federica Raimondi, Juliette Venel

Corrosion occurring in subsurface nuclear waste repositories yields the production of dihydrogen (H2), the possible accumulation of which being a major security concern. The development of accurate and theoretically assessed mathematical and numerical models is therefore a priority to quantify the…

EURAD joint program. 2023. ⟨hal-04210782⟩

Article dans une revue

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⟩

Article dans une revue

On the square-root approximation finite volume scheme for nonlinear drift-diffusion equations

Clément Cancès, Juliette Venel

We study a finite volume scheme for the approximation of the solution to convection diffusion equations with nonlinear convection and Robin boundary conditions. The scheme builds on the interpretation of such a continuous equation as the hydrodynamic limit of some simple exclusion jump process. We…

Comptes Rendus. Mathématique, 2023, 361, pp.535--558. ⟨10.5802/crmath.421⟩. ⟨hal-03693887v3⟩