Publications

• 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

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

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⟩

• 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⟩

• 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⟩

• Thèse

Optimisation du procédé d'impression par stéréolithographie de phosphate tricalcique béta, Optimisation of the stereolithography printing process of tricalcium phosphate

Chloé Goutagny

Les technologies de fabrication additive permettent la production rapide d’objets de forme complexe et trouvent un intérêt dans le domaine des soins à la santé, en particulier pour la fabrication d’implants osseux synthétiques. Les biocéramiques sont des matériaux de choix pour ce type d’implant.…, The additive manufacturing technologies enable the fast production of objects with a complex shape and are particularly interesting in the medical field and the manufacture of synthetic bone implants. Bioceramics are materials of choice for this type of implant. Amongst them the hydroxyapatite and…

Matériaux. Université Polytechnique Hauts-de-France, 2021. Français. ⟨NNT : 2021UPHF0035⟩. ⟨tel-03592842⟩

• Communication dans un congrès

Topological Optimization of Piezoelectric Structures for Low-frequency Energy Harvesting Applications

Madiha Yessari, Mohamed Rguiti, Abdelowahed Hajjaji, Najoua Fangachi, Abdezzahid Arbaoui

Recovering energy from ambient vibrating resources has been the subject of considerable research studies in the last decade. However, the vibrations found in the environment correspond to low frequencies, often below 200 Hz, and for small-scale applications and if the excitation is sinusoidal, the…

9th International Renewable and Sustainable Energy Conference (IRSEC), Nov 2021, Morocco, France. pp.1-6, ⟨10.1109/IRSEC53969.2021.9741205⟩. ⟨hal-04475226⟩

• Article dans une revue

Influence of cetyltrimethylammonium bromide and hydroxide ions on the interfacial tension and stability of emulsions of dodecane in aqueous silicate solutions

Matthieu Bertin, Donatien Gomes Rodrigues, Christel Pierlot, Cyrille Albert-Mercier, Catherine Davy, David Lambertin, Véronique Rataj

This manuscript provides an understanding of the emulsification mechanisms of a model alkane (dodecane) in concentrated aqueous sodium silicate solutions, for e.g. formulating alkane/geopolymer composites for varied applications. To this purpose, we assume that silicate oligomers stabilize the…

Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2021, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 628, pp.127306. ⟨10.1016/j.colsurfa.2021.127306⟩. ⟨hal-04094024⟩

• Article dans une revue

Multioutput Gaussian processes with functional data: A study on coastal flood hazard assessment

Andrés F. López-Lopera, Déborah Idier, Jeremy Rohmer, François Bachoc

Surrogate models are often used to replace costly-to-evaluate complex coastal codes to achieve substantial computational savings. In many of those models, the hydrometeorological forcing conditions (inputs) or flood events (outputs) are conveniently parameterized by scalar representations,…

Reliability Engineering and System Safety, 2021, 218, pp.108139. ⟨10.1016/j.ress.2021.108139⟩. ⟨hal-03412417v2⟩