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30 results on '"Fourniols, J."'

4. Adaptable Synchronous Detection for the SHM of Composite Component: Autonomous FPAA Architecture on Polyimide Film

Author

Sabeha Zedek, Codreanu, C., Belisario, A., Fourniols, J. -Y, Escriba, C., Camps, T., Francois, R., Équipe Nano Ingénierie et Intégration des Systèmes (LAAS-N2IS), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, IFFSTTAR, Inria, Université de Nantes, Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck, Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), and Université de Toulouse (UT)

Subjects
Civil engineering SHM applications, Stress & strain, SHM and maintenance, [MATH.MATH-ST]Mathematics [math]/Statistics [math.ST], [PHYS.MECA]Physics [physics]/Mechanics [physics], [STAT.TH]Statistics [stat]/Statistics Theory [stat.TH], [SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph]
Abstract

International audience; Structural Health Management strategies usually involve monitoring complex components, during their working life. Carbon fiber reinforced polymer components are becoming more and more used, throughout the structural engineering fields, because of their superior mechanical properties. Moreover, due to their construction, these materials open the path for new Òsmartî components, with integrated sensors and monitoring capabilities. Flexible circuits are essential in this context. In order to adapt to complex geometries, sensors and their connectivity have to be flexible and as un-intrusive as possible. Following previous work, aimed at inserting sensors with flexible connectivity in between the sheets of carbon fibers, we conceived and implemented a reconfigurable acquisition system that can be easily adapted to perform strain measurements in various EM5 noise conditions. This paper presents a comparison between three circuits dedicated to strain measurement using a commercial strain gauge and flexible connectivity on Kapton2. The first circuit consists of a classic Wheatstone bridge under continuous voltage. The second uses the synchronous detection principle with classic circuits and functions. The third innovates upon the synchronous detection principle by implementing several functions in a reprogrammable analog chip called FPAA (Filed Programmable Analog Array). The analysis of these circuits shows the added value of using reconfigurable devices with flexible connectivity and sensors in order to provide a universal solution for the monitoring of complex components.

Published
2014

5. SHM Based on Modal Analysis: Accelerometer and Piezoelectric Transducers Instrumentation for Civil Engineering in Heterogeneous Structures

Author

Belisario-Briceño, A., Sabeha Zedek, Camps, T., François, R., Escriba, C., Fourniols, J. -Y, Équipe Nano Ingénierie et Intégration des Systèmes (LAAS-N2IS), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT), IFFSTTAR, Inria, Université de Nantes, Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck, Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, and Institut National des Sciences Appliquées (INSA)

Subjects
Civil engineering SHM applications, Monitoring, [MATH.MATH-ST]Mathematics [math]/Statistics [math.ST], Modal analysis, [PHYS.MECA]Physics [physics]/Mechanics [physics], [STAT.TH]Statistics [stat]/Statistics Theory [stat.TH], [SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph]
Abstract

International audience; This paper presents a strategy for the detection of mechanical damage of a reinforced concrete beam strengthened by Carbon Fiber Reinforced Polymers (CFRP) sheets (TFC ©) based on the joint use of piezoelectric sensors and conventional accelerometers. The beam is subjected to repeat impacts that may represent the action of vehicles on a roadway joint of a bridge, at different levels of damage induce by bending of the reinforced concrete beam. The results show that piezoelectric sensors provide a much wide response those accelerometers allowing a study in the high frequency range (above 2 kHz). The spectral response appears largely affected by mechanical damage on the beam and suggests a possible use for SHM in Civil Engineering structures.

Published
2014

28. VHDL–AMS modelling and simulation of a planar electrostatic micromotor

Author

Endemaño, A, Fourniols, J Y, Camon, H, Marchese, A, Muratet, S, Bony, F, Dunnigan, M, Desmulliez, M P Y, and Overton, G

Abstract

System level simulation results of a planar electrostatic micromotor, based on analytical models of the static and dynamic torque behaviours, are presented. A planar variable capacitance (VC) electrostatic micromotor designed, fabricated and tested at LAAS (Toulouse) in 1995 is simulated using the high level language VHDL–AMS (VHSIC (very high speed integrated circuits) hardware description language–analog mixed signal). The analytical torque model is obtained by first calculating the overlaps and capacitances between different electrodes based on a conformal mapping transformation. Capacitance values in the order of 10−16 F and torque values in the order of 10−11 N m have been calculated in agreement with previous measurements and simulations from this type of motor. A dynamic model has been developed for the motor by calculating the inertia coefficient and estimating the friction-coefficient-based values calculated previously for other similar devices. Starting voltage results obtained from experimental measurement are in good agreement with our proposed simulation model. Simulation results of starting voltage values, step response, switching response and continuous operation of the micromotor, based on the dynamic model of the torque, are also presented. Four VHDL–AMS blocks were created, validated and simulated for power supply, excitation control, micromotor torque creation and micromotor dynamics. These blocks can be considered as the initial phase towards the creation of intellectual property (IP) blocks for microsystems in general and electrostatic micromotors in particular.

Published
2003

29. Controllable and re-usable patch for transdermal iontophoresis drug delivery.

Author

Talbi, Y., Campo, E., Brulin, D., and Fourniols, J. Y.

Subjects
TRANSDERMAL medication, ELECTRIC stimulation, MEDICAL electronics, DRUG delivery devices, ELECTRONICS
Abstract

Transdermal active drug delivery is one way to propose new disease treatment as an improvement to passive patches diffusion based on concentration gradient. Although skin limitations due to low permeability active transdermal delivery approach are investigated, by the proposition of an iontophoretic reusable and controllable patch. Making such an e-health care device offers active control and permanent actuating link able to control the amount of drug delivered. In vitro experiment is conducted to investigate the current effect on the permeation. Modelling and simulations are carried out to optimise the design and the electrical stimulation and finally a global overview of the architecture of the patch is presented. [ABSTRACT FROM AUTHOR]

Published
2018
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30. Cross-functional design of Wireless Sensor Networks applied to Aircraft Health Monitoring

Author

Dilhac, J. -M, Bafleur, M., Fourniols, J. -Y, Escriba, C., Plana, R., Daniela Dragomirescu, Assouère, L., Pons, P., Aubert, H., Buchheit, C., Équipe Intégration de Systèmes de Gestion de l'Énergie (LAAS-ISGE), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT), Équipe Nano Ingénierie et Intégration des Systèmes (LAAS-N2IS), Équipe MIcro et Nanosystèmes pour les Communications sans fil (LAAS-MINC), AIRBUS SAS, Airbus [France], Fu-Kuo Chang, Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), and Université Fédérale Toulouse Midi-Pyrénées

Subjects
energy management, Aircraft Health Monitoring, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, wireless sensor networks
Abstract

International audience; The purpose of this paper is to describe the relationships existing between the various levels or functions encompassed when designing a Wireless Sensor Network in the specific area of Aircraft Health Monitoring. More precisely, cross dependence between topics such as implementation technologies, environmental energy capture and storage, sensor design, and communication issues are covered. Various practical examples in the field are briefly given to illustrate different correlations.

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