Industrial Collaborators

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Industrial Collaborators Field demonstration and
evaluation sites University Collaborators
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ISPIR provides strain monitoring using fiber
optic components that integrate both sensing and
data transmission functions in a single sensor
element.

• The sensing and communications component is
  supported by an intelligent knowledge-based
  system to
• Enhance the quality of the information available
• for determining the cause of the fault
  indication
• Reduce the probability of false calls

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Advantages of Fiber-Optic Sensors

• Non-conductive immune to electromagnetic /
  radio frequency interference
• Stable no connector and lead line resistance
• Light weight small diameter, embeddable,
  corrosion resistant
• Flexible-can be mounted to any structural shape
• Easily bondable to most materials
• Multiplexing is possible, distributed sensing
  possible
• Response not restricted to intensity-based
  system
• Capable of intermittent readings no
  reconnection errors
• Can be connected to fiber optic telecom lines

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Information from Strain Sensors

• Pressure Change
• Corrosion
• Leaks
• Buckling
• Bending
• Axial Movement
• Cracks
• Temperature

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TYPES OF OPTICAL FIBERS USED IN SENSORS AND
TELECOMMUNICATION NETWORKS
SINGLE MODE FIBERS HAVE LESS ATTENUATION
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System Design
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Optical Strain Measurement Technologies

• Long Gage
• Gage length 1 to 30 m
• Resolution 10 microns

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The Long Gage

• 10cm to 100m long
• Prefabricated format for easy installation
• Static measurements
• 8 16 channel instrument, with optical switch
  option up to 50 channels
• Available in battery power configuration
• Measures average displacement over gage length
• Lead lengths 10km
• Displacement resolution 20 microns

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The Brillouin Gage

• The Brillouin Gage is a recent development
  particularly well suited to pipeline monitoring
• Efficient monitoring over long distances with
  excellent spatial resolution
• The Brillouin Gage will be used for the initial
  deployment for relatively large-scale monitoring
  of critical locations

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APPLICATION OF BRILLOUIN SENSOR SYSTEM TO MONITOR
PIPELINES
50km
PIPELINE
1xN OPTICAL SWITCH
OPTICAL FIBERS AT VARYING CIRCUMFERENTIAL LOCATION
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BRILLOUIN INSTRUMENT
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Finite Element Analysis
Hoop strain for a pipe with reduced section (5-7
o'clock position)
Finite element mesh for pipe with reduced section
in the 5-7 oclock position.
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VIEW OF PIPE WITH THREE FOX-TEK 10m SENSORS IN
HOOP DIRECTION TO MEASURE WALL DEFECT
STRAINS (NRCan Laboratory, Ottawa)
UNIFORM PIPE SECTION NO CUTOUT
4 LONG CUTOUT 0.5 WIDE _at_ 50 DEPTH
24 LONG CUTOUT _at_60 DEPTH
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Laboratory Tests Full Scale
1m sensor 10m spiral sensor 0.1m sensor
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INSTALLATION OF SERPENTINE FT SENSOR ON PIPELINE
TO MONITOR WALL THINNING DUE TO EROSION/CORROSION
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WORST CASE MODEL SNAKE SENSOR
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PREFAB SNAKE SENSOR MOUNTED ON ADHESIVE MESH
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PREFABRICATED FIBER OPTIC COIL SENSOR FOR
MONITORING CRACK GROWTH IN PIPES
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COIL SENSORS BONDED TO PIPE SURFACE
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LOAD (KN)
STRAIN X 10 -4
CHANGE IN SECTION STIFFNESS WITH CUMULATIVE LOAD
CYCLES
42 DIAMETER 0.625 THICK
APPLICATION OF COIL SENSOR TO MONITOR SINGLE
CRACK GROWTH THROUGH PIPE WALL
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APPLICATION OF COIL SENSORS TO HOT ELBOWS TO
MONITOR PRESSURE, TEMPERATURE AND INTERNAL WALL
THINNING
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PRESSURE TEST OF CORRODED PIPE SECTION USING FT
COIL SENSORS
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• BRILLOUIN DETECTION OF
• LEAKS IN PIPELINES
• DETECT THERMAL ANOMALY (gt3C)
• MONITOR GROWTH IN SENSOR RESPONSE
• SENSOR CAN BE LOCATED ADJACENT TO BURIED
  PIPELINE
• OR
• BONDED TO ABOVE GROUND PIPELINE
• SAME BRILLOUIN SENSOR CAN BE USED FOR LEAK
• AND
• ENCROACHMENT DETECTION

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Schematic of Demonstration
BRILLOUIN SENSOR SYSTEM TEST FOR THIRD PARTY
INTRUSION
load
3 fiber passes at depths of 10 cm 20 cm 30
cm 1 km fiber interrogated
1 km spool
Instrumentation
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Sample Results

• No Load and 1000 lb

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Third Party Intrusion

• Contour plots of fiber strain in a plane 10 cm
  beneath surface for 150 lb load

2 MHz contours from 10 MHz to 20 MHz
14 MHz (240 g ) contour
Seven fibers at 10 cm intervals
10 cm / div
10 cm / div
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Snake Sensor
Ultrasonic Data 27 Oct 02
12 oclock
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SIM-o-IP

• Structural Integrity Monitoring over IP
• SIM-o-IP provides
• An Internet Interface
• Internet Communications
• Knowledge-Based Interpretation and Diagnosis

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Current Products

• FT Sensors
• Bare fiber
• Coil
• Crack
• High Temperature
• Ruggedized
• FT-B Rebar

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Current Products

• FTI-3300 Sensor Scanner
• Uses FT sensors
• 8 channels
• Local PC for data acquisition
• Remote or local operation
• Network capability

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Products in Development

• FTI-6000 Brillouin Sensor Scanner
• 25 km range
• Strain
• Temperature
• Vibration
• Remote or local operation
• Radio modem capable
• Network capable

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Products in Development

• FTI-3400 Remote Sensor Scanner
• FT sensors (4)
• Solar powered
• Radio modem
• Network capable
• Remote control

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Products in Development

• FTI-3410 Portable Sensor Scanner
• FT sensors (4)
• Battery powered
• Rugged field design
• Onboard data storage

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Products in Development

• FTI-3450 FT Multi-channel Sensor Scanner
• FTI-3475 FT Sensor Optical Switch
• FT sensors (4 - 50)
• Scanner base unit
• Companion switch unit
• Radio modem capable
• Network capable
• Remote control

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Products in Development

• FTI-5000 Bragg Sensor Scanner
• Serial Bragg sensors
• WDM system
• Multi-channel design
• Static dynamic
• Instrumentation room use
• Remote or local operation
• Network capability

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