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Article dans une revue

Experimental characterization of the mechanical behaviour and the failure of multi-sheet and multi-material spot welded assembly

Rami Tounsi, Grégory Haugou, Fahmi Chaari, Nicolas Leconte, Eric Markiewicz

An experimental investigation of the mechanical behaviour of three-sheet multi-material spot welded assembly is performed. An experimental device based on the Arcan principle is developed to test the three-sheet spot welded specimen under pure opening mode, pure shear mode and mixed opening/shear…

International Journal of Impact Engineering, 2019, 130, pp.226-238. ⟨10.1016/j.ijimpeng.2019.04.017⟩. ⟨hal-03448674⟩

Article dans une revue

ENOrMOUS: ENergy Optimization for MObile plateform using User needS

Ismat Chaib Draa, Smail Niar, Emmanuelle Grislin-Le Strugeon, Morteza Biglari-Abhari, Jamel Tayeb

Optimizing energy consumption in modern mobile handled devices plays a crucial role as lowering the power consumption impacts battery life and system reliability. Recent mobile platforms have an increasing number of sensors and processing components. Added to the popularity of power-hungry…

Journal of Systems Architecture, 2019, 97, pp.320-334. ⟨10.1016/j.sysarc.2018.10.004⟩. ⟨hal-01879172⟩

Article dans une revue

Ultra-local model-based control of the square-back Ahmed body wake flow

Baptiste Plumejeau, Sebastien Delprat, Laurent Keirsbulck, Wafik Abassi

This paper presents a new model-free control approach applied to a dynamical fluidic system. The main objective is to evaluate the ability of this closed-loop control technique to control the bistability of a turbulent wake flow past to a square-back Ahmed body. This bistable behavior occurs for…

Physics of Fluids, 2019, 31 (8), pp.085103. ⟨10.1063/1.5109320⟩. ⟨hal-03341963⟩

Article dans une revue

Enhancing the settling time estimation of a class of fixed‐time stable systems

Rodrigo Aldana-Lopez, David Gomez-Gutierrez, Esteban Jiménez-Rodríguez, Juan Diego Sanchez-Torres, Michael Defoort

In this paper, we provide a new nonconservative upper bound for the settling time of a class of fixed-time stable systems. To expose the value and the applicability of this result, we present four main contributions. First, we revisit the well-known class of fixed-time stable systems, to show the…

International Journal of Robust and Nonlinear Control, 2019, 29 (12), pp.4135-4148. ⟨10.1002/rnc.4600⟩. ⟨hal-03644253⟩

Article dans une revue

The single-processor scheduling problem with time restrictions: complexity and related problems

Rachid Benmansour, Oliver Braun, Said Hanafi

We consider the single-processor scheduling problem with time restrictions (STR) in order to minimize the makespan, where a set of independent jobs has to be processed on a single processor, subject only to the following constraint: During any time period of length α, the number of jobs being…

Journal of Scheduling, 2019, 22 (4), pp.465-471. ⟨10.1007/s10951-018-0579-8⟩. ⟨hal-03574467⟩

Article dans une revue

A heterogeneous multi-core based biomedical application processing system and programming toolkit

Tassadaq Hussain, Amna Haider, Abdelmalik Taleb-Ahmed

Due to the growth of biological databases and biomedical instruments, the high performance active (real-time) signal processing becomes a challenge for medical scientists and engineers. The medical applications require a high-performance signal processor which can process the scientific and…

Journal of Signal Processing Systems, 2019, 91 (8), pp.963-978. ⟨10.1007/s11265-018-1437-9⟩. ⟨hal-03138041⟩

Article dans une revue

Repairnator patches programs automatically

Martin Monperrus, Simon Urli, Thomas Durieux, Matias Martinez, Benoit Baudry, Lionel Seinturier

Repairnator is a bot. It constantly monitors software bugs discovered during continuous integration of open-source software and tries to fix them automatically. If it succeeds in synthesizing a valid patch, Repairnator proposes the patch to the human developers, disguised under a fake human…

Ubiquity, 2019, July (2), pp.1-12. ⟨10.1145/3349589⟩. ⟨hal-02267512⟩

Communication dans un congrès

CFD Simulations of the Rheological Behavior of Aqueous Foam Flow Through a Half-Sudden Expansion

Heni Dallagi, Ahmad Al Saabi, Christine Faille, Thierry Benezech, Wolfgang Augustin, Fethi Aloui

Aqueous foam is a non-Newtonian complex fluid. Its flow through the singularities presents many fundamental aspects. The rheological character of the foams flowing in this kind of geometries can create important disturbance on its behavior, according to the flow rate set and therefore a…

ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, Jul 2019, San Francisco, CA, United States. ⟨10.1115/ajkfluids2019-4650⟩. ⟨hal-03125278⟩

Communication dans un congrès

Influence of Surface Irregularities on Hydrodynamic Instabilities in Couette-Taylor Flow

Lamia Gaied, Marc Lippert, Laurent Keirsbulck, Maxence Bigerelle, Emna Berrich, Fethi Aloui

Abstract In this work, we propose an experimental study of roughness effect on hydrodynamic instabilities’ Couette-Taylor flow. During experiments, the inner cylinder rotates at a given angular velocity and the outer cylinder is maintained fix. The main objective of the study is to highlight the…

ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, Jul 2019, San Francisco, United States. ⟨10.1115/AJKFluids2019-4625⟩. ⟨hal-03519623⟩

Communication dans un congrès

PIV and POD Investigations of Coherent Vortices Downstream Circular or Rectangular Obstacles Located Between Two Parallel Plates

Fethi Aloui, Amal Elawady, Khaled J Hammad

The study is an experimental investigations using PIV. The measurements were obtained by PIV for an unsteady laminar flow across a rectangular channel with a cross-section 300 × 30mm2, in the middle of which is located a cylindrical or a square obstacle. In the case of the cylindrical configuration…

ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019, Jul 2019, San Francisco, United States. ⟨10.1115/AJKFluids2019-4651⟩. ⟨hal-03679776⟩