optical diagnostics research and applications at metrolaser
DESCRIPTION
Optical Diagnostics Research and Applications at MetroLaser Presented at The University of California Irvine, March 24, 2006 by James D. Trolinger, Ph. D Vice-president and Co-founder (949) 553-0688 http://www.metrolaserinc.com. June 1988: Founded by Drs. Cecil Hess and Jim Trolinger. - PowerPoint PPT PresentationTRANSCRIPT
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Optical Diagnostics Research and Applications at MetroLaser
Presented at The University of California Irvine, March 24, 2006by
James D. Trolinger, Ph. DVice-president and Co-founder(949) 553-0688 http://www.metrolaserinc.com
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History and Achievements• June 1988: Founded by Drs. Cecil Hess and Jim Trolinger.
• 1994: U. S. SBA Distinguished Award of Excellence.
• 1995: U. S. SBA National Prime Contractor of the Year.
• 2000: Spun off 4DVision Technologies Inc.
• 2004: AIAA Aerodynamics Measurement Technology Award
• 2006: Ongoing collaborations with 14 universities
• 2006: 30 employees, 15 Ph. D’s.
• Thirteen electro-optical laboratories in Irvine CA.
• Providing State of the Art Optical diagnostic instruments, services, & research to government and industry.
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MetroLaser/UCI Collaborations
• MetroLaser has had joint contracts with UCI continuously for nearly 18 years.
• Over 30 different programs, subcontracts in excess of $2M.
• MetroLaser 4 fulltime employees and 10 interns from UCI.
• Currently have 3 active joint proposals
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Summary
1. Laser Doppler Vibrometry
2. Aerodynamic and Aero optic Measurement Technology
3. Optical Sensors for NDT, monitoring, detection, and discrimination
4. Tracking and Ranging for Space Situation Awareness
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Technologies for Vibration Analysis
• Electronic Digital Holography (PhaseCam)• Laser Doppler Vibrometry
– Single beam– Multiple beam– Matrix
• Applications– Non Destructive Testing– Modal analysis– Machinery health monitoring– Remote microphone– Land mine detection
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MetroLaser Vibrometer
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Typical Frequency Response of a Column
Reduction of Natural FrequencyWith Increasing Damage
Impact Testing of a Concrete Column in the Civil Engr. Lab at UC Irvine
Increasing damage
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Automotive Experiments
Use VibroMet 500 to measure the engine vibration as a function of engine speed
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Automotive Experiments
Variation of Peak Frequency and Velocity with Engine Speed
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Landmine DetectionScanning or Multipoint
Laser vibrometer
Loudspeaker50-300 Hz
Land mine
Ground Surface
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MetroLaser LDV Cart Array
Lane 13, VS2.2., Depth = 1”
Broadband Excitation, 80-300 Hz
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Multibeam LDV
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Correlation of LDV Defect Data WithUltrasound Image of a F-15 Vertical Stabilizer
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MultiBeam Full Field Application
Dual Array Configuration
Custom Matrix Configuration
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10” Blade - 4940 Hz
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Electronic (Digital) HolographyElectronic (Digital) Holography
• Holographic data stored on CCD array.
• Digital wavefront reconstructionPhase shifting interferometry (hologram plane).Diffraction theory (propagate to image).
• Interferograms are computed.
• Amenable to fiber optical implementation.
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Commercial MetroLaser wavefront sensor
Laser
Object BeamTransmitting Lens Receiving Lens
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3D Plot of Turbine Blade Vibration Mode
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Profilometry
Detail of US penny shows1 m profiling resolution
Discovering Lincoln in the CentDiscovering Lincoln in the Cent
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Flow Visualization Holography
Analyzing flow fields for density, velocity,
temperature
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Dynamic optical Pathlength Measurements in real time
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Complete experiment
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Wavefront Data-Baseline L/D=9
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Schematic of aero-optic model. Aero-Optic Effects
Boundary layer turbulence & shock wave Window
Cooling
Stress induced widow aberrations
Aberrated Wavefront
Computer Model of System Model
Shock Turbulence Window
Model masks used to simulate
aero-optic effects Imaging system model Image
Plane
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AOTS Simulated Aero-Optical Effects
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Planar Doppler VelocimetrySystem for use in the AEDC 16 Foot
Transonic Wind Tunnel Facility
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Laser Reference Frequency System
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Proposed PDV installation in 16T
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Fiber Optic Microsensors for High-Fiber Optic Microsensors for High-Response Gas Total Temperature Response Gas Total Temperature
MeasurementMeasurement
AF03-251 (AC10)
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High response High response measurement of total temperaturemeasurement of total temperature distortion at up to 48 locations around turbine distortion at up to 48 locations around turbine inlet.inlet.
Minimum flow blockage Minimum flow blockage from sensor arrayfrom sensor array
Robust Robust against flow borne particulatesagainst flow borne particulates
Probe replacement Probe replacement with minimum down-timewith minimum down-time
Air Force RequirementsAir Force Requirements
8000 R/s
T= 300 R
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Task 2:Task 2: Design of fiber optic Design of fiber optic microsensormicrosensor
125m
2m
metallic mirror 0.01m
fiber cladding / 125m
fiber core / 10m
FP etalon 1-2m ZnSe / Si/SiC
metallic mirror 0.1m
0
CharacteristicsCharacteristics
Intrinsic Intrinsic solid statesolid state FP FP sensorsensor
Environmentally isolated
high bandwidth response
minimum flow disruption
high density array deployment
ConstructionConstruction
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detectors scannermetal surface
feature
specular reflection
scanner
scatteredlight
Light Scattering Fatigue Detection
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N = 9796 N = 14096
Nf = 43736
Notched Fatigue Sample 13P = 720 N
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Active Laser Tracking System Concept
3D state vector Velocity Maneuvering Vibration
Coherent Detection
Control and DataProcessing Platform
Beam directing & telescope platform
Propagation through
atmosphere
Target tracking, sensing & imaging
Visible & IRRadiation
Non-coherent Radiation
Laser
Laser driverand
controller
Seed
CPU: System control & Data processing
Coherent Radiation
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CPU
P1
P2
NLM
M1
M2
Multifunctional detector-array provides information on:• Delay time distance• Doppler shift velocity V
• Spatial/angular coordinates
0.7O
Gain G2
Gain G1
Laser Tracking System (Operational Principles)
IR
Laser &
Visible
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FPI design and assembly
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Desired Imaging FPI specification
Tuning range: t > 5 nm Bandpass width: p < 0.01 nm or p/ <
10-5
Acceptance angle: p ~ 1 ~ 0.017 rad Working aperture: 1.0 inch Transmittance T0 40 – 50 % Background rejection > 20 dB
Central-wavelength: ~700 nm
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TDLAS System Layout for H2O
InGaAs Detector
Fiber
2-into-1 Fiber combiner
Tunable Diode lasers Laser current
controllerComputer for signal processing
Beam launch
Waveform generator
flame
1 = 1343 nm 2 = 1392 nm
xy
z
~3 cm
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Swirl Burner at UCI Combustion Lab
Computer dataacquisition systemDiode laser
controller
InGaAs Detectors
Collimatinglenses
Fiber splitter
Waveformgenerator
Model boiler
Z0 = 0.5 mm
Z1 = 115 mm
Chemiluminescence sensor
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Results Comparison (T1)
FS = -70% 100% Load
1150.01170.01190.01210.01230.01250.01270.01290.01310.01330.01350.0
0.0 10.0 20.0 30.0 40.0 50.0 60.0
EA (%)
T1
run
avg
(K
)
4000.0
4500.0
5000.0
5500.0
6000.0
6500.0
CO
2* r
un
avg
T1run
CO2 run
TDLAS temperature and CO2 chemiluminescence:
EA = excess air: air beyond stoichiometric
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EPA SBIR Opportunities-coming• Improving the Great Lakes• Control of Air Pollution• Monitoring and Remote Sensing• Green Buildings• Mining and Mine Waste Management• Lead Paint Detection and Removal• Agriculture and Rural Community Improvement• Management of Animal Feeding Operations• Drinking Water Treatment and Monitoring• Pollution Indicators for Beaches and Recreational Waters• Water and Wastewater Management• Innovation in Manufacturing for Environmental Protection• Nanotechnology• Engine and Vehicle • Emissions Reduction• Solid and Hazardous Waste• Homeland Security. • Website- www.epa.gov/ncer/sbir/
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Homeland Security SBIR
• Opened10 March – 10 April, 2006 Full Proposals 10 April, 2006 Deadline for
• AEROSOL COLLECTION INTO LOW ANALYSIS VOLUMES (ACLAV) • RELIABLE PEROXIDE-BASED EXPLOSIVES DETECTION WITH LOW FALSE
ALARM RATE • ENHANCED EXPLOSIVE SAMPLE COLLECTION AND/OR
PRECONCENTRATION SYSTEMS • SIGNAL PROCESSING FOR A SOUTHERN BORDER SURVEILLANCE
SYSTEM • HUMAN DETECTOR FOR CARGO SHIPPING CONTAINERS • INSTANTANEOUS REMOTE SENSING DATA RECEIVING AND PROCESSING
FOR EMERGENCY RESPONSE • NETWORK-BASED BOUNDARY CONTROLLERS • BOTNET DETECTION AND MITIGATION • MANAGING MULTI-MEDIA SURVEILLANCE INFORMATION NETWORKS
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Thank you for your attention
You can download this presentation from our website:
www.metrolaserinc.com