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Numerical study of the reflected elastic waves using Rayleigh diffraction integral

Nadir Maghlaoui, Hakim Djelouah, Assia Oudina, Mohamed Ourak, Farouk Benmeddour

In this work, the transient ultrasonic waves radiated by a linear phased array transducer in a liquid then reflected at a liquid solid interface is studied. A model based on the Rayleigh integral is used where the reflection at the plane interface is considered by using the reflection coefficients…

2nd International Conference on Numerical Modelling in Engineering, NME 2019, Aug 2019, Beijing, China. , 657 (1), pp.012014. ⟨hal-03594276⟩

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

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

Stability analysis of a class of switched nonlinear systems using the time scale theory

Fatima Zohra Taousser, Michael Defoort, Mohamed Djemai, Seddik Djouadi, Kevin Tomsovic

This paper investigates stability for a class of switched nonlinear systems evolving on a non-uniform time domain. The studied class of systems switch between a nonlinear continuous-time and a nonlinear discrete-time subsystem. This problem is formulated using time scale theory where the latter is…

Nonlinear Analysis: Hybrid Systems, 2019, 33, pp.195-210. ⟨10.1016/j.nahs.2019.02.006⟩. ⟨hal-03468301⟩

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

Local oscillator frequency offset estimation for low cost sdr receiver

Reda Yagoub, M. Benaissa, Belkacem Benadda, Abdelmalik Taleb-Ahmed

There are currently many low cost software defined radio (SDR) receivers in the market such as RTL-SDR dongles. These devices can be used to receive the radio frequency (RF) signals in the range of their tuners (front-end). The stability and the accuracy of the local oscillator (LO) among the…

Telecommunications and Radio Engineering, 2019, 78 (12), pp.1097-1105. ⟨10.1615/TelecomRadEng.v78.i12.70⟩. ⟨hal-03575939⟩

Ouvrages

Service Oriented, Holonic and Multi-agent Manufacturing Systems for Industry of the Future

Theodor Borangiu, Damien Trentesaux, Paulo Leitão, Adriana Giret, Vicente Botti

Presents recent research on service orientation in holonic and multi-agent manufacturing. Includes selected papers from the 9th International Workshop on Service Oriented, Holonic and Multi-agent Manufacturing Systems for Industry of the Future (SOHOMA'19), held in Valencia, Spain, on October…

Springer, 853, 440 p., 2019, 9783030274764. ⟨10.1007/978-3-030-27477-1⟩. ⟨hal-03111218⟩

Communication dans un congrès

High-order solution of nonlinear acoustic wave equation for isotropic solids using perturbation and finite difference methods

Wenhan Lyu, Xianmei Wu, Wei-Jiang Xu, Jiayi Chen

Nonlinear acoustic wave equation with Murnaghan parameters in isotropic solids is usually resolved by perturbation method [1-3]. High-order harmonics are obtained by expanding the equation in one linear and a series of nonlinear equations. It is found that errors in harmonics will be accumulated…

14th International Conference on Theoretical and Computational Acoustics, ICTCA 2019, Jul 2019, Beijing, China. pp.315-322. ⟨hal-03593442⟩

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⟩

Communication dans un congrès

Event-B Decomposition Analysis for Systems Behavior Modeling

Kenza Kraibi, Rahma Ben Ayed, Joris Rehm, Simon Collart-Dutilleul, Philippe Bon, Dorian Petit

Applications of formal methods to critical systems such as railway systems have been studied by several research works. Their ultimate goal is to increase confidence and to ensure the behavior correctness of these systems. In this paper, we propose to use the Event-B formal method. As a central…

14th International Conference on Software Technologies, Jul 2019, Prague, Czech Republic. pp.278-286, ⟨10.5220/0007929602780286⟩. ⟨hal-03679809⟩