ODiSI

Luna Technologies’ Optical Distributed Sensor Interrogator (ODiSI) instrument enables high resolution temperature and strain measurements using telecom-grade optical fiber as the sensor. The ODiSI offers the ability to test a structure at specific points of interest or continuously along the fiber with user-configurable sensing locations and gage lengths. A single fiber connected to a single, compact instrument provides high definition, unprecedented visibility into your structure under test, providing more information at a fraction of the cost. ODiSI specifications

• 50 meter maximum sensing length
• 5 mm spatial resolution
• ± 1 µstrain and ± 0.1 °C accuracy with 1-cm gauge length
• ± 15,000 µstrain with 50 meter version and ± 13,000 µstrain with 10 meter version

• Multiple sensing points with a single connection
• Easily deployed, inexpensive, disposable sensors
• Lightweight and immune to EMI/RF interference
• High definition sensing - 5mm spatial resolution
• Simultaneous strain and temperature measurement with a single fiber sensor
• User-configurable gauge length and sensing locations
• Customize sensing points
• Re-process stored data at a later time with more/different sensing points or higher spatial resolution

• Load/fatigue/mechanical testing
• Model and simulation validation
• Design verification and optimization
• Composite manufacturing and engineering
• Structural Health Monitoring

OBR 4600

Luna Technologies' Distributed Temperature and Strain Sensing Software, when combined with the Optical Backscatter Reflectometer™ (OBR), transforms your standard telecom-grade fiber into a high spatial-resolution strain and temperature sensor. The OBR uses swept wavelength interferometry (SWI) to measure the Rayleigh backscatter as a function of length in optical fiber with high spatial resolution. An external stimulus (like a strain or temperature change) causes temporal and spectral shifts in the local Rayleigh backscatter pattern. OBR 4600 specifications

The OBR measures these shifts and scales them to give a distributed temperature or strain measurement. The SWI approach enables robust and practical distributed temperature and strain measurements in standard fiber with centimeter-scale spatial resolution up to 70 meters of fiber with strain and temperature resolution as fine as 1 µstrain and 0.1 °C.

• Use standard telecom-grade fiber. No more expensive specialty fibers needed for measurements.
• Highly distributed fiber sensing for strain and temperature
• Very high spatial resolution: down to 2 mm
• Centimeter resolution up to 70 meters
• +/- 0.1°C , +/- 1µ strain resolution at 1 cm
• High speed – five second acquisition times at high resolution

Short range communications networks (local intranet, fiber to the home, shipboard and aircraft data bus):

• Find high operational temperatures that degrade lifetime or performance of components
• Determine if strain induced during installation exceeds safe threshold
• Look for long-term strain concentrations that threaten fiber integrity

Structural monitoring for naval, aerospace and civil structures:

• Conformal deformation and shape sensing
• Composite damage assessment
• Bonded joint integrity monitoring

Temperature profile monitoring:

• Fuel cells
• Concrete cure temperature monitoring in large structures
• Industrial chemical process monitoring

Pipeline shift and leak detection

Electrical power line sag and temperature monitoring

DSS 4300

Luna Technologies’ Distributed Sensing System™ (DSS) 4300 is a fiber optic sensing tool for making distributed measurements of temperature and strain. The DSS uses swept-wavelength interferometry to simultaneously interrogate thousands of sensors integrated in a single fiber. These sensors consist of discrete Fiber Bragg Grating (FBG) point sensors which can each reflect the same nominal wavelength. As such, the sensors can be fabricated on the draw tower, eliminating the need for individual grating fabrication. DSS 4300 specifications

The DSS combined with Luna’s sensing fiber provides a tool for distributed sensing with up to 1 cm spatial resolution along the length of the fiber.

• Highly distributed fiber sensing for strain and temperature
• Centimeter resolution up to 70 meters
• +/- 0.1°C , +/- 1µ strain resolution at 1 cm
• Five second acquisition times at high resolution
• High temperature capabilties – up to 300°C

Structural monitoring for naval, aerospace and civil structures:

• Conformal deformation
• Composite damage assessment
• Bonded joint integrity monitoring

Temperature profile monitoring:

• Fuel cells
• Concrete cure temperature monitoring in large structures
• Industrial chemical process monitoring
• High temperature capabilities - up to 300°C

Pipeline shift and leak detection