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18301
28/09/2018

Measurement of Shock Wave and Particle Velocities in Shocked Dielectric Material from Millimeter-Wave Remote Sensing

B.ROUGIER, H.AUBERT, A.LEFRANCOIS

MINC, CEA-DAM

Manifestation avec acte : European Microwave Week ( EuMW ) 2018 du 23 septembre au 28 septembre 2018, Madrid (Espagne), Septembre 2018, 9p. , N° 18301

Lien : https://hal.laas.fr/hal-01876708

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Abstract

A millimeter-wave remote sensing technique is used here as a noninvasive and continuous approach for the real-time measurement of shock wave velocity as well as the velocity of the shocked dielectric material during an impact. Experimental results obtained from planar symmetric impacts on PolyMethyl MethAcrylate (PMMA) cylinders are discussed and demonstrate that the proposed millimeter-wave remote sensing technique is highly convenient for deriving both the velocity of the shock wave and velocity of the shocked PMMA material. The proposed approach is applicable to any dielectric material subject to an impact and is an excellent candidate for deriving the equation of state of shocked materials.

144721
18258
26/09/2018

Licence Logiciel Monitoralox

G.ALMUNEAU, B.FRANC, S.BACHELET, R.ROUSSEAU

PHOTO, IDEA

Rapport LAAS N°18258, Septembre 2018

Lien : https://hal.archives-ouvertes.fr/hal-01857633

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144514
18277
12/09/2018

Polyethylene Outgassing Study for MEMS Nuclear Radiation Sensor

D.KUMAR, J.PHILIPPE, S.CHARLOT, S.ASSIE-SOULEILLE, A.LECESTRE, A.FERRAND, H.AUBERT, P.PONS

MINC, TEAM, I2C, ICA

Manifestation avec acte : Eurosensors 2018 du 09 septembre au 12 septembre 2018, Graz (Autriche), Septembre 2018, 4p. , N° 18277

Lien : https://hal.laas.fr/hal-01852434

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Abstract

In this paper, the out-gassing from PolyEthylene (PE) film is studied under nuclear irradiation for the design and fabrication of passive MEMS dosimeters. The fabrication of sensor needs high temperature process that leads to specific constraints on the PE film. Radiation chemical yield of hydrogen production (G H2) from PE under gamma irradiation is verified by mass spectroscopy after temperature annealing in vacuum up to 400°C. Prototypes are fabricated to validate the fabrication of the sensor and then irradiated with high energy gamma radiation (with dose of 20 kGy). Measurements of membrane deflections after irradiation validate the G H2 factor, showing low pollution level of PE during sensor fabrication.

144596
18276
12/09/2018

Dynamic Mechanical Simulation of Miniature Silicon Membrane during Air Blast for Pressure Measurement

J.VEYRUNES, J.RIONDET, A.FERRAND, M.LAVAYSSIERE, J.LUC, H.AUBERT, P.PONS

ICA, MINC, CEA-DAM

Manifestation avec acte : Eurosensors 2018 du 09 septembre au 12 septembre 2018, Graz (Autriche), Septembre 2018, 4p. , N° 18276

Lien : https://hal.laas.fr/hal-01852437

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Abstract

The development of new ultra-fast sensors for pressure air blast monitoring requires taking into account the very short rise time of pressure occurring during explosion. Simulations show here that the dynamic mechanical behavior of membrane-based sensors depends significantly on this rise time when the fundamental mechanical resonant frequency of the membrane is higher than 10 MHz.

144594
18238
07/09/2018

Fast hyperspectral cube reconstruction for a double disperser imager

I.ARDI, H.CARFANTAN, S.LACROIX, A.MONMAYRANT

PHOTO, IRAP, RIS

Manifestation avec acte : European Signal Processing Conference ( EUSIPCO ) 2018 du 03 septembre au 07 septembre 2018, Rome (Italie), Septembre 2018, 5p. , N° 18238

Lien : https://hal.laas.fr/hal-01852173

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Abstract

We consider the problem of hyperspectral cube reconstruction with a new controllable imaging system. The reconstruction with a small number of images acquired with different configurations of the imager avoids a complete scanning of the hyperspectral cube. We focus here on a quadratic penalty reconstruction approach, which provides a fast resolution thanks to the high sparsity of the involved matrices. While such a regu-larization is known to smooth the restored images, we propose to exploit the system capability to acquire the panchromatic image of the scene, to introduce prior information on the sharp edges of the image, leading to a fast and edge-preserved reconstruction of the image.

144373
18201
15/08/2018

Passive and Chipless Packaged Transducer for Wireless Pressure Measurement

J.PHILIPPE, R.DE PAOLIS, C.ARENAS BUENDIA, D.HENRY, A.COUSTOU, A.RUMEAU, H.AUBERT, P.PONS

MINC, I2C

Revue Scientifique : Sensors and Actuators A: Physical, Vol.279, pp.753-762, Août 2018 , N° 18201

Lien : https://hal.laas.fr/hal-01838614

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Abstract

A new microwave fully passive, chipless and packaged sensor for wireless pressure monitoring in harsh environments (such as, extreme temperature, radioactive and/or toxic environments) is proposed in this paper. The sensor consists of a planar microstrip resonator, which is electromagnetically coupled with a high resistivity and thin silicon membrane. Prototypes have been designed and fabricated using a photoresist intermediate layer for the silicon membrane bonding. The electromagnetic simulation of the system is also performed in order to predict the transducer performances. Measurement results using the packaged sensor are provided to experimentally validate the simulation results and the manufacturing process.

144133
18298
01/08/2018

New stability method of a multirate controller for a three-axis high-Q MEMS accelerometer with simultaneous electrostatic damping

L.CIOTIRCA, O.BERNAL, J.ENJALBERT, T.CASSAGNES, H.TAP, H.BEAULATON, S.SAHIN

OSE, NXP -Semiconductors, ENSEEIHT

Revue Scientifique : IEEE Sensors Journal, Vol.18, N°15, pp.6106-6114, Août 2018 , N° 18298

Lien : https://hal.archives-ouvertes.fr/hal-01872373

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Abstract

Over the past years, cutting-edge advances in electronics and microfabrication have allowed the integration of multiple sensors within integrated analog and digital circuits to design Micro Electro Mechanical Systems (MEMS). The multiple sensor integration or sensor fusion, enables both cost and surface reduction, while maintaining high performances. This paper presents a new control system for an underdamped three-axis accelerometer, which allows the co-integration in the same cavity with a three-axis Coriolis gyroscope, to design a Six Degrees of Freedom (DoF) combo sensor. The accelerometer Analog Front End (AFE) consumes from a. power supply and is able to reach its steady state in compared to a open-loop and no damping configuration. The transducer control is implemented using a simultaneous multirate electrostatic damping method. To conclude on the closed loop system stability, an innovative approach, based on the multirate signal processing, theory has been developed.

144715
18300
20/07/2018

Simultaneous Shock and Particle Velocities Measurement using a Single Microwave Interferometer on Pressed TATB Composition T2 Submitted to Plate Impact

B.ROUGIER, A.LEFRANCOIS, H.AUBERT, E.BOUTON, J.LUC, A.OSMONT, Y.BARBARIN

MINC, CEA-DAM, CEA/Gramat

Manifestation avec acte : International Detonation Symposium ( DetSymp ) 2018 du 15 juillet au 20 juillet 2018, Cambridge (USA), Juillet 2018, 7p. , N° 18300

Lien : https://hal.laas.fr/hal-01876716

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Abstract

Microwave interferometry has been applied to study the shock initiation response of TATB-based HE samples in order to perform the simultaneous measurement of the shock and particle velocities. The particle velocity characterization is not possible with the standard phase method. Therefore the new analytic electromagnetic wave propagation method, based on the Doppler frequency shifts of reflecting moving dielectric interfaces, has been developed and applied to the single sustained shock experiment. The experimental results are compared with hydrocode numerical simulations and a good agreement is observed.

144719
18272
15/07/2018

Highly spectrally pure 90 GHz signal synthesis using a coupled optoelectronic oscillator

A.LY, V.AUROUX, R.KHAYATZADEH, N.GUTIERREZ PANOZZO, A.FERNANDEZ , O.LLOPIS

MOST

Revue Scientifique : IEEE Photonics Technology Letters, Vol.30, N°14, pp.1313-1316, Juillet 2018 , N° 18272

Lien : https://hal.archives-ouvertes.fr/hal-01863561

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Abstract

A 90 GHz frequency reference is synthesized through harmonic generation from a 30 GHz coupled optoelectronic oscillator. The 30 GHz signal and its third harmonic feature an average power level of −5.6 dBm and −15.8 dBm respectively at the photodiode output. Phase noise measurements at 30 GHz and 90 GHz have been performed and phase noise levels as low as −114.4 dBc/Hz at 1 kHz offset for the fundamental and −104 dBc/Hz at 1 kHz offset frequency for the 90 GHz signal have been obtained.

144584
18302
14/07/2018

Electromagnetic Wave Reflection from Shocked Dielectric Materials

B.ROUGIER, H.AUBERT, A.LEFRANCOIS

MINC, CEA-DAM

Manifestation avec acte : International Symposium on Antennas and Propagation ( IEEE-APS ) 2018 du 08 juillet au 14 juillet 2018, Boston (USA), Juillet 2018, 3p. , N° 18302

Lien : https://hal.laas.fr/hal-01876698

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144732
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