PDV workshop. Albuquerque (New-Mexico) october IDIL Activities and new PDV system
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1 PDV workshop Albuquerque (New-Mexico) october 2012 IDIL Activities and new PDV system David Assous Sales project manager
2 SUMMARY 1- Company presentation 2- Business field 3- Some realizations - CEA MegaJoule project 4- IDIL CEA PDV collaboration 5- IDIL New PDV System 6- Some experiments
3 1- Company presentation - Company founded in Team of 23 people - 8 engineers - 6 technicians - 3 sales engineers - Based in Lannion into 650m² of R&D laboratories - 2 commercial offices near Paris and Geneva. - Member of
4 2- Business field
5 2- Business field - Optical connectors and patchords assembly
6 2- Business field - Optical connectors and patchords assembly - Optical fiber sensor conception Strain Deformation Temperature Pressure Chimical Based on fiber Bragg grating or Brillouin
7 2- Business field - Optical connectors and patchords assembly - Optical fiber sensor conception - Customized fiber optic component realization Fibered Variable attenuator Collimator, Focuser Fiber extremity polishing Fiber matrix Bundle Fiber spool
8 2- Business field - Optical connectors and patchords assembly - Optical fiber sensor conception - Customized fiber optic component realization - Customized optical integration Laser management for PETAL alignement Electrical-optical synchronisation converter
9 2- Business field - Conception and fabrication : Fiber lasers Fibers amplifiers ASE optical source Customized laser (fs, ps, ns)
10 2- Business field - Instrumentation : High speed instrumentation Photonic Doppler velocimetry system Customized measurement system
11 2- Business field Design of electronic board for optoelectronic applications : Current and temperature driver Optoelectronic converter High speed detection Embedded software, micro - controller GUI conception for optoelectronic applications
12 4- IDIL CEA PDV collaboration : Beginning of the collaboration with the CEA to develop an industrial PDV system - System integrated into a 29U cabinet - 4 measurement channels system - 12 systems installed into the differents CEA laboratories. - PDV system commercialize under CEA license - Development of a treatment software based on Fourier transform algorithm by the CEA team - Price for a 4 channels PDV cabinet ~ 160 K
13 5- IDIL New PDV system - Low size. Only 5U height - Modular (1 to 4 channels) - Attractive initial cost (75K ) - Extra channel (~22K ) - Unique Ethernet interface - Enhance specifications Sensitivity 1900V/W Linewidth < 15KHz
14 5- IDIL New PDV system Specifications : - Speed measurement : 0 to 20 km/s - Speed uncertainty : t v = 150ns.m/s - Time uncertainty : 200 ps on the raw signal 5 ns on velocity after processing - Minimum reflectance required 60dB - High sensitivity (>50dB) - Up to 4 measurement channels - Ethernet interface - Continuous or triggered mode - Low heat deposition on sample - Eye safety (1.55 μm), all fibered design
15 5- IDIL New PDV system High power laser de (4W) split in 4 channels Complete control of the main laser and the different channel by one screen Channel with one laser diode (reference) and all the optical component for detection (circulator, photodiode )
16 5- IDIL New PDV system Single fiber or mono fiber configuration Photodiode output Power adjustment of the reflected signal from the target Interest of this modular system : frequency multiplexing (4 channels at 4 differents fixed wavelength)
17 6- Some experiments Part I PDV measurement on composite target under gun shock David Assous 1, Romain Ecault 2, Michel Boustie 2, Nacim Laimeche 2, Pierre-Antoire Frugier 3, Patrick Mercier 3, Laurent Berthe 4, Michel Arrigoni 5 1 IDIL, Institut PPIME 2, CEA 3, PIMM Arts et Métiers ParisTech 4, ENSTA Bretagne 5
18 6- Some experiments Part I PDV probe Rear face PDV measurement Epoxy support Séquence de tir Pression measurement Composite Impacteur (Alu)
19 6- Some experiments Part I First step : Calibration of the gun (velocity measurement of the impactor) Measurement into the gun Destruction of the impactor
20 6- Some experiments Part I
21 6- Some experiments Part I 2 nd step : Measurement on composite material for aeronautic Size of sample 10*10 mm Thickness : 3mm PDV measurement on the rear side Section of laminated composite Damaged and non-damaged Goal : Determination of the damage level by velocity measurement
22 6- Some experiments Part I Shock wave propagation into the the composite (between the 2 faces)
23 6- Some experiments Part II Laser Shock Adhesion Test (LASAT) V.Guipont 1 G. Begue 1 D. Assous 2 MINES-PARISTECH 1 - IDIL 2
24 6- Some experiments Part II LASAT Materials Center of Mines-ParisTech Saga Thales Laser : maximum energy: 2J pulse duration: 5.2 ns wavelength: 532 nm Two settings parameters are: Irradiated area diameter, m Laser energy, J laser fluency (power density), W/m² Fixed data for each system: Sample thickness Layer thickness
25 6- Some experiments Part II Laser beam PDV system Material under test PDV Probe
26 6- Some experiments Part II Alu 250µm 0,7 Joule V Corrigée (m/s) : V
27 6- Some experiments Part II VISAR Chocs à 0,7 Joule Vitesse (m/s) al250_22 al250_23 al250_37 al250_38 al250_ Temps (ns) Alu 250µm
28 6- Some experiments Part II Nickel 1,5mm 1 Joule V Corrigée (m/s) : V
29 Thank you for your attention Contact : David Assous Sales project manager david.assous@idil.fr Tel :
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