Publicaciones

• Article dans une revue

Subdivisions of Horned or Spindle Dupin Cyclides Using Bézier Curves with Mass Points

Lionel Garnier, Lucie Druoton, Jean-Paul Becar, Laurent Fuchs, Géraldine Morin

This paper shows the same algorithm is used for subdivisions of Dupin cyclides with singular points and quadratic Bézier curves passing through infinity. The mass points are usefull for any quadratic Bézier representation of a parabola or an hyperbola arc. The mass points are mixing weighted points...

WSEAS Transactions on Mathematics, 2021, 20, pp.756-776. ⟨10.37394/23206.2021.20.80⟩. ⟨hal-03541207⟩

• Article dans une revue

Investigation of the Eigen Frequency of a Cantilever Microbeam Immersed in a Fluid Under the Piezoelectric Effect

Victory Elias, Flavie Braud, Philippe Champagne, Georges Nassar

In this paper, a new model of piezoelectric cantilever is developed, it can be heavily used in a micro electromechanical system (MEMS). This new prototype eliminates several risks caused by the previous means already used and increases the sensation in terms of rheology. Our approach is based on...

Sensors & Transducers., 2021, 254 (7), pp.31-37. ⟨hal-03564209⟩

• Thèse

Contribution à la modélisation du frittage de l'alumine par chauffage micro-ondes, Contribution to the modelling of alumina sintering by microwave heating

Maxence Renaux

Depuis les années 80, le chauffage par micro-ondes connaît un regain d’intérêt pour lefrittage des matériaux céramiques. Il permet une réduction des temps de traitement (defrittage et de palier). Lesmesures de température réalisées pendant le frittage ne pouvants’effectuer qu’à distance, il n’est..., Since the eighties, microwave heating is receiving renewed interest in the sintering ofceramic materials. It allows a reduction in processing times (sintering and dwell times).Temperature measurements during the microwave sintering can only be carried out atdistance. It is not possible to know the...

Matériaux. Université Polytechnique Hauts-de-France, 2021. Français. ⟨NNT : 2021UPHF0043⟩. ⟨tel-03652656⟩

• Article dans une revue

Surfaces of the nearly Kähler S3×S3 preserved by the almost product structure

Miroslava Antić, Zejun Hu, Marilena Moruz, Luc Vrancken

The product manifold S3×S3 is one of the only four homogeneous six-dimensional nearly Kähler manifolds. It also admits a canonical almost product structure P, which is compatible with the almost complex structure (see Bolton et al., Tôhoku Math. J. 67 (2015), 1–17, and Moruz and Vrancken, Publ....

• Thèse

Dopages de phosphate tricalcique beta et mise en forme de macroporeux par robocasting, Beta tricalcium phosphate doping and macroporous shaping by robocasting

Nicolas Somers

Ce travail de thèse porte sur l’élaboration de phosphate β-tricalcique (β-TCP, β-Ca3(PO4)2) dopé à l’aide de quatre cations (Mg2+, Sr2+, Ag+ et Cu2+) par la méthode de co-précipitation et la fabrication de macroporeux par robocasting. Le β-TCP est l'un des biomatériaux les plus étudiés dans le..., This thesis work focuses on the development of β-tricalcium phosphate (β-TCP, β-Ca3(PO4)2) doped with four cations (Mg2+, Sr2+, Ag+ and Cu2+) by the co-precipitation method and the manufacture of macroporous scaffolds by robocasting. β-TCP is one of the most studied biomaterials in the field of...

Biomatériaux. Université Polytechnique Hauts-de-France, 2021. Français. ⟨NNT : 2021UPHF0046⟩. ⟨tel-03550098⟩

• Article dans une revue

Existence and percolation results for stopped germ-grain models with unbounded velocities

David Coupier, David Dereudre, Simon Le Stum

We investigate the existence and first percolation properties of general stopped germ-grain models. They are defined via a random set of germs generated by a homogeneous planar Poisson point process in R2. From each germ, a grain, composed of a random number of branches, grows. This grain stops...

Stochastic Processes and their Applications, 2021, 142, pp.549-579. ⟨10.1016/j.spa.2021.08.008⟩. ⟨hal-04396369⟩

• Article dans une revue

Oxidation behavior of Al-doped Ti3SiC2-20 wt.%Ti5Si3 composite

Bendiba Guedouar, Youcef Hadji, Abdessabour Benamor, Nabil Chiker, Adel Haddad, Arnaud Tricoteaux, Jean-Pierre Erauw, Vedi Dupont, Fayçal Hadj-Larbi, Mohamed Amine Soualili, Mohamed Hadji

In this work, an aluminum-doped Ti3SiC2-20 wt.% Ti5Si3 composite was prepared through reactive spark plasma sintering (SPS) from a powder mixture of Ti, SiC, C, and Al. The microstructure evolution of the formed oxide scales onto this composite were investigated in the temperature range of 1000–...

Ceramics International, 2021, 47 (23), pp.33622-33631. ⟨10.1016/j.ceramint.2021.08.272⟩. ⟨hal-04475396⟩

• Thèse

Contribution au développement des capteurs de pression basés sur des dispositifs à onde acoustique de surface (SAW) pour des environnements sévères (hautes températures), Contribution to the development of pressure sensors based on surface acoustic wave (SAW) devices for severe environments (high temperatures)

Hassan Alhousseini

Depuis de nombreuses années, les ondes acoustiques de surface (SAW) sont utilisées dans les composants électroniques pour des applications industrielles (filtrage, traitement du signal) et pour la réalisation des capteurs. En raison de systèmes électroniques embarqués et de la possibilité de..., For many years surface acoustic waves (SAW) have been used in manufacturing electronic components for industrial and sensing applications. Due to the absence of an embedded electronic system and the possibility of wireless communication this technology can offer a great solution for sensing in...

Acoustique [physics.class-ph]. Université Polytechnique Hauts-de-France; Institut national des sciences appliquées Hauts-de-France, 2021. Français. ⟨NNT : 2021UPHF0044⟩. ⟨tel-03601410⟩

• Article dans une revue

Investigation of aluminum nitrate as a set retarder of magnesium potassium phosphate cement: Mechanisms involved in diluted suspension

Céline Cau Dit Coumes, Angélique Rousselet, Biwan Xu, Cyrille Albert-Mercier, sandrine Gauffinet

In this study, the influence of aluminum nitrate on the hydration process of magnesium potassium phosphate (MKP) cement was investigated experimentally and through thermodynamic modelling using diluted systems with Mg/PO$_4$ molar ratio and water-to-cement ratio of 1 and 100 respectively. Three...

Cement and Concrete Research, 2021, 150, pp.106608. ⟨10.1016/j.cemconres.2021.106608⟩. ⟨hal-04280341⟩

• Pré-publication, Document de travail

STABILIZATION OF COUPLED WAVE EQUATIONS WITH VISCOUS DAMPING ON CYLINDRICAL AND NON-REGULAR DOMAINS: CASES WITHOUT THE GEOMETRIC CONTROL CONDITION

Mohammad Akil, Haidar Badawi, Serge Nicaise, Virginie Régnier

In this paper, we investigate the direct and indirect stability of locally coupled wave equations with local viscous damping on cylindrical and non-regular domains without any geometric control condition. If only one equation is damped, we prove that the energy of our system decays polynomially...

2021. ⟨hal-03458856⟩