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Affichage de 1331 à 1340 sur 1985

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

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

Clustering cities based on their development dynamics and Variable neigborhood search

B. S. Zhikharevich, O. V. Rusetskay, Nenad Mladenovic

Clustering cities based on their socio-economic development in long time period is an important issue and may be used in many ways, e.g., in strategic regional planning. In this paper we continue our recent study where cumulative attribute for each year replaces nine other attributes, called ‘…

Electronic Notes in Discrete Mathematics, 2015, 47, pp.213-220. ⟨10.1016/j.endm.2014.11.028⟩. ⟨hal-03401504⟩

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

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

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⟩

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

Quantitative approach to determine the mechanical properties by nanoindentation test: Application on sandblasted materials

Y. Xia, Maxence Bigerelle, Salima Bouvier, Alain Iost, P.-E. Mazeran

A novel method is developed to improve the accuracy in determining the mechanical properties from nanoindentation curves. The key point of this method is the simultaneous statistical treatment of several loading curves to correct the zero point error and identify the material properties considering…

Tribology International, 2015, 82, pp.297-304. ⟨10.1016/j.triboint.2014.07.022⟩. ⟨hal-01170499⟩

Article dans une revue

Decomposition of a tribological system by chaos theory on rough surfaces

Maxence Bigerelle, Jean-Marie Nianga, A. Iost

The purpose of this paper is to analyze the turning machinability of a martensitic steel, according to the cutting speed, and through signal analyses of the morphology of the machined surface. We initially carried out the classification of a large number of parameters of roughness, on the basis of…

Tribology International, 2015, 82, pp.561-576. ⟨10.1016/j.triboint.2014.07.011⟩. ⟨hal-01170300⟩