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Affichage de 611 à 620 sur 2097

Article dans une revue

Numerical investigation of several twisted tubes with non-conventional tube cross sections on heat transfer and pressure drop

Bruce Indurain y Urricelqui, David Uystepruyst, François Beaubert, Sylvain Lalot, Asdis Helgadottir

Numerical simulations were performed with the open-source CFD software OpenFOAM to investigate the ability of several configurations of short length twisted tube geometries with non-circular cross-section connected to tubes with circular cross-section to induce a swirling flow. The heat transfer…

Journal of Thermal Analysis and Calorimetry, 2020, 140 (3), pp.1555-1568. ⟨10.1007/s10973-019-08965-4⟩. ⟨hal-03545598⟩

Article dans une revue

Mechanistic insights on ultra-tough polylactide-based ionic nanocomposites

Jean-Emile Potaufeux, Jérémy Odent, Delphine Notta-Cuvier, Rémi Delille, Sophie Barrau, Emmanuel P. Giannelis, Franck Lauro, Jean-Marie Raquez

We report the synthesis and characterization of ultra-tough polylactide-based ionic nanocomposites via melt-blending of commercial polylactide (PLA), imidazolium-functionalized poly(ethylene glycol)-based polyurethane (im-PU) and surface-modified sulfonated silica nanoparticles (SiO2–SO3H) using…

Composites Science and Technology, 2020, Composites Science and Technology, pp.108075. ⟨10.1016/j.compscitech.2020.108075⟩. ⟨hal-02502424⟩

Article dans une revue

The multi-visit team orienteering problem with precedence constraints

Said Hanafi, Renata Mansini, Roberto Zanotti

We study a new variant of the Team Orienteering Problem (TOP) where precedence constraints are introduced. Each customer has a set of tasks that have to be accomplished according to a predefined order by an heterogeneous fleet of vehicles. If a customer is selected, then all the tasks have to be…

European Journal of Operational Research, 2020, 282 (2), pp.515-529. ⟨10.1016/j.ejor.2019.09.045⟩. ⟨hal-03400340⟩

Article dans une revue

Numerical and Experimental Study of Flow and Convective Heat Transfer on a Rotor of a Discoidal Machine With Eccentric Impinging Jet

Chadia Haidar, Rachid Boutarfa, Mohamed Sennoune, Souad Harmand

Abstract Discoidal rotor–stator systems are especially used in rotating machines and in numerous industrial applications. The design of high-power machine requires compliance with certain cooling-related stresses. Using an air jet impinging on a rotating disk is one way to increase the global heat…

Journal of Thermal Science and Engineering Applications, 2020, 12 (2), ⟨10.1115/1.4044207⟩. ⟨hal-03440037⟩

Article dans une revue

How to Select 2D and 3D Roughness Parameters at Their Relevant Scales by the Analysis of Covariance

Stéphane Tchoundjeu Ngatchou, Maxence Bigerelle, Francois Robbe-Valloire, Tony da Silva Botelho, Frédéric Jarnias

In this paper, a multi-scale methodology is proposed to model and characterize the effect of two lubricants on changes in surface morphology during a running-in test. The test concerns two steels samples, mounted on a twin-disc tribometer to test each of lubricants A and B for a period of 42 h. The…

Materials, 2020, 13 (7), pp.1526. ⟨10.3390/ma13071526⟩. ⟨hal-03440999⟩

Article dans une revue

Are CNNs reliable enough for critical applications? An exploratory study

Mohamed Ayoub Neggaz, Ihsen Alouani, Smail Niar, Fadi Kurdahi

Resource-constrained CNN implementations are subject to various reliability threats. This article provides an exploratory study investigating the impact of faults (soft errors modeled as bit flips) across the parameters of CNNs and the impact on the CNN weights, which can be used to create…

IEEE Design & Test, 2020, 37 (2), pp.76-83. ⟨10.1109/MDAT.2019.2952336⟩. ⟨hal-03321520⟩

Article dans une revue

The concept of “safety bubble” for reconfigurable assembly systems

Yves Sallez, Thierry Berger, Thérèse Bonte

In the last decade, Reconfigurable Manufacturing Systems (RMS) have been proposed to deal with mass-customization problems and volatile markets. Applied to the field of assembly, this concept gives rise to Reconfigurable Assembly Systems (RAS). The latter are composed of different basic units (e.g…

Manufacturing Letters, 2020, 24, pp.77-81. ⟨10.1016/j.mfglet.2020.03.015⟩. ⟨hal-03367233⟩

Article dans une revue

Friction Correction of Austenite Flow Stress Curves Determined under Axisymmetric Compression Conditions

Eli Saúl Puchi-Cabrera, Jean-Dominique Guerin, José Gregorio La Barbera-Sosa, Juan Carlos Álvarez-Hostos, Philippe Moreau, Mirentxu Dubar, Laurent Dubar

The experimental flow stress curves of structural steels obtained from axisymmetric compression tests conducted under hot-working conditions very often include the frictional effects present at the tool/specimen interface. Such effects have a significant influence on the flow stress and therefore,…

Experimental Mechanics, 2020, 60 (4), pp.445-458. ⟨10.1007/s11340-019-00492-5⟩. ⟨hal-03440090⟩

Article dans une revue

90° ferroelectric domain switching effect on interfacial strain mediated magnetoelectric coupling

Tarik Sadat, Damien Faurie, Pierre Godard, Dominique Thiaudière, Pierre-Olivier Renault, Fatih Zighem

The phenomena associated with strain-mediated multiferroic behavior have been quantitatively studied by combining synchrotron x-ray diffraction (XRD), ferromagnetic resonance (FMR) and macroscopic strain measurements (digital image correlation) in a magnetoelectric composite (Ni film on PZT…

Journal of Physics D: Applied Physics, 2020, 53 (14), pp.145001. ⟨10.1088/1361-6463/ab6431⟩. ⟨hal-03448700⟩

Article dans une revue

Determination of an Objective Criterion for the Assessment of the Feasibility of an Instrumented Indentation Test on Rough Surfaces

Julie Marteau, Abdeljalil Jourani, Maxence Bigerelle

The influence of roughness on the results of indentation testing was investigated using a semianalytical model. This model used simulated surfaces that were described using three standard roughness parameters: the root-mean-square deviation S q , the wavelength (or cutoff of Gaussian high-pass…

Materials, 2020, 13 (7), pp.1589. ⟨10.3390/ma13071589⟩. ⟨hal-02617512⟩