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Affichage de 1391 à 1400 sur 2052

Article dans une revue

Determination of adequate regenerator for a Gamma-type Stirling engine

Ramla Gheith, Fethi Aloui, Sassi Ben Nasrallah

This paper deals with an optimization of the Stirling engine regenerator’s. Firstly, different materials are experimented (Stainless Steel, Copper, aluminum and Monel 400). The engine performances and the state of each material after 15 h of use are considered. The Stainless steel was the material…

Applied Energy, 2015, 139, pp.272-280. ⟨10.1016/j.apenergy.2014.11.011⟩. ⟨hal-03450995⟩

Article dans une revue

Wettability versus roughness: Multi-scales approach

Vanessa Belaud, Stéphane Valette, Guy Stremsdoerfer, Maxence Bigerelle, Stéphane Benayoun

These authors experimentally investigate the influence of multi-scale roughness on contact angle measurements, and they propose a model combining the Wenzel and Cassie–Baxter equations with the 3D roughness parameters defined by ISO25178. To do this, a generic methodology based on a statistical…

Tribology International, 2015, 82, pp.343-349. ⟨10.1016/j.triboint.2014.07.002⟩. ⟨hal-04533575⟩

Article dans une revue

The representative topography of worn hot rolling mill cylinders

Emilie Luc, Maxence Bigerelle, Raphaël Deltombe, Mirentxu Dubar

In this paper, a method is proposed to extract the most representative surface topography from n surfaces. A criterion is proposed that allows rejecting irrelevant topographical maps. Then, this methodology is applied on the hot rolling process, on replicas of industrial surfaces. These analyses…

Tribology International, 2015, 82, pp.387-399. ⟨10.1016/j.triboint.2014.05.031⟩. ⟨hal-03451967⟩

Article dans une revue

Wettability versus roughness: Multi-scales approach

Vanessa Belaud, Stéphane Valette, Guy Stremsdoerfer, Maxence Bigerelle, Stéphane Benayoun

These authors experimentally investigate the influence of multi-scale roughness on contact angle measurements, and they propose a model combining the Wenzel and Cassie–Baxter equations with the 3D roughness parameters defined by ISO25178. To do this, a generic methodology based on a statistical…

Tribology International, 2015, 82, pp.343-349. ⟨10.1016/j.triboint.2014.07.002⟩. ⟨hal-03451770⟩

Article dans une revue

Multi-level homotopy perturbation and projection techniques for the reanalysis of quadratic eigenvalue problems: The application of stability analysis

Franck Massa, Bertrand Lallemand, Thierry Tison

Complex eigenvalue analysis is widely used to investigate the stability of a dynamical system with frictional contact. For finite element models, iterative solvers are needed to precisely calculate complex modes and eigenvalues. However, in cases such as reanalysis studies, optimization or…

Mechanical Systems and Signal Processing, 2015, 52-53, pp.88-104. ⟨10.1016/j.ymssp.2014.07.013⟩. ⟨hal-03451031⟩

Article dans une revue

A variable neighborhood search for solving the multi-vehicle covering tour problem

Manel Kammoun, Houda Derbel, Mustapha Ratli, Bassem Jarboui

In this article, we consider a transportation problem with different kinds of locations: V , T, and W. The set T ⊂ V consists of vertices that must be visited through the use of potential locations in V and W consists of locations that must be covered. The problem consists in minimizing vehicle…

Electronic Notes in Discrete Mathematics, 2015, 47, pp.285-292. ⟨10.1016/j.endm.2014.11.037⟩. ⟨hal-03401415⟩

Article dans une revue

A New Approach to Edge Stress Measurement in Tempered Glass Panels

Hillar Aben, Dominique Lochegnies, Yuan Chen, Johan Anton, M. Paemurru, Marella Õis

An important characteristic of glass panels is residual stress, especially stress at the surface. To measure this stress different devices have been developed, which use either the tunneling effect in light propagation near the surface or the scattered light method. Both devices are rather…

Experimental Mechanics, 2015, 55 (2), pp.483-486. ⟨10.1007/s11340-014-9950-7⟩. ⟨hal-03451429⟩

Article dans une revue

A variable neighborhood search algorithm for the vehicle routing problem with multiple trips

Mohamed Cheikh, Mustapha Ratli, Omar Mkaouar, Bassem Jarboui

The vehicle routing problem with multiple trips (V RP M T ) is a variant of thestandard (V RP ), where each vehicle can be used more than once during the workingperiod. For this NP-Hard problem, we propose a variable neighborhood searchAlgorithm in which four neighborhood structure are designed to…

Electronic Notes in Discrete Mathematics, 2015, 47, pp.277-284. ⟨10.1016/j.endm.2014.11.036⟩. ⟨hal-03401358⟩

Article dans une revue

Decoupled current control and sensor fault detection with second‐order sliding mode for induction motor

Suneel Kumar Kommuri, Jagat Jyoti Rath, Kalyana Chakravarthy Veluvolu, Michael Defoort, Yeng Chai Soh

This study proposes a new decoupled control method for induction motor (IM) based on higher order sliding mode (HOSM) controller. The proposed controller serves dual purpose by offering decoupled control and sensor fault detection. In this scheme, the decoupled control of d − q currents does not…

IET Control Theory and Applications, 2015, 9 (4), pp.608-617. ⟨10.1049/iet-cta.2014.0336⟩. ⟨hal-03428725⟩

Article dans une revue

Solving the maximally diverse grouping problem by skewed general variable neighborhood search

Jack Brimberg, Nenad Mladenovic, Dragan Urošević

The maximally diverse grouping problem requires finding a partition of a given set of elements into a fixed number of mutually disjoint subsets (or groups) in order to maximize the overall diversity between elements of the same group. In this paper we develop a new variant of variable neighborhood…

Information Sciences, 2015, 295, pp.650-675. ⟨10.1016/j.ins.2014.10.043⟩. ⟨hal-03401528⟩