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Fiber Optic Strain & Temperature Sensing

Fiber Optic Strain & Temperature Sensing

Stop guessing and start measuring with high resolution distributed temperature measurements and comprehensive strain measurements for composite structures with the industry’s first and only high-definition distributed strain & temperature measurement system.

Fiber optic sensing products

Luna offers a range of high definition fiber optic sensing (HD-FOS) products designed for use across multiple markets and applications. What ever your application Luna offers a product ideally suited for your needs.

ODiSI

ODiSI

The ODiSI platform is Luna’s most full featured HD-FOS system, offering a range of features to increase usability, data visualization and analysis. The ODiSI A offers fully adjustable gage lengths and sensor locations. The ODiSI B offers a choice of four pre-configured modes and an advanced user interface.

OBR 4600

OBR 4600

The OBR 4600 is a reflectometer offering unprecedented capabilities in characterizing fiber optic networks. The extended range option adds the functionality of strain and temperature sensing with a sensing length of up to 2 kilometers.

Optical switching

FOS 008 & 036

We offer 8 and 36 channel fiber optic switches. A fiber optic switch can convert any of the single channel HD-FOS systems into a multichannel test system.

Sensors

Sensors

A key advantage of HD-FOS over fiber Bragg grating based systems is the ability to use sensors constructed from standard unaltered fiber cable. This offers users sensors at lower cost which is a big advantage in applications where sensors are consumable. additionally, the gage itself, both length and spacing, is determined through software and is configurable by the user. This offers unprecedented flexibility when instrumenting test articles.


Market applications

Design teams working on the frontier use the best technology to create the best technology. Luna’s HD-FOS is the best technology for validating designs and enabling teams get to market quickly, with the best performing machine at the lowest risk.

Aerospace

High definition fiber optic sensing will play a major role in helping the aerospace industry continue its transition to advanced lightweight composites. Composite materials, with their unique properties, require a more thorough design validation at every stage of the structural integrity building block process.

Confidence in design and faster certification with structural airframe testing
  • Component testing
    Component testing, validating models and testing damage tolerance

    HD-FOS with its ability to provide a strain measurement along every millimeter of fiber is the perfect solution for validating structural models across a wide range of environmental conditions, particularly in areas of high stress concentration. The high density data provided by fiber is an equally perfect analytical tool for understanding crack initiation and propagation.

  • Assembly
    Understanding variability in new assembly processes

    Transitioning away from metals to new advanced materials will mean new joining methods and methods of assembly. Both of these will introduce new sources of variation which will impact the quality of parts produced. HD-FOS can help locate and characterize the high strain gradients and stress concentration points that may result from these new fabrication methods. The variability in these new processes can be quantified and then appropriately factored into the design and manufacturing process.

  • Element
    Structural validation of the basic building blocks

    The elements are the first building blocks of the aircrafts structure and the first opportunity to validate predicted strains and stresses versus actual. Even the most basic structural member will have machinings, joints and areas of stress concentration. Using composite materials will only add an additional level of uncertainty and increase the need for thorough validation of engineering models.

  • Coupon
    A full characterization of material properties

    Structural integrity begins with a full characterization of material properties. HD-FOS with its ability to provide a full field view of strain, can provide the material data aircraft designers need to build accurate models and avoid redesigns late in the development cycle.

Automotive

Environmental concerns and increasingly stringent government regulations are driving the automotive Industry toward the use of new lighter weight material systems and an electrification of vehicle drive trains. These trends will create new design challenges that in turn will require new advanced methods for test, measurement and validation. Luna’s high definition fiber optic sensing technology will help automotive manufacturers speed these new technologies to market while lowering the risk associated with the introduction of these new materials and processes.

Value propositions
  • High definition data helps accurately characterize high strain or thermal gradients that can only be estimated with point sensing
  • Fiber can reach hard to instrument places and at only 150 microns in diameter can be embedded in structures without influencing parameters under test
  • Fine mesh finite element models of critical components can be validated with certitude
  • Windshield
    Fiber sensing of a windshield

    Reduced installation cost vs traditional point sensing. Even standard tests protocols can benefit from the reduced installation time for fiber sensing over traditional strain gages. Customers using the ODiSI system can install thousands of strain gages in significantly less time than installing just dozens of strain gages.

  • Exhaust
    Temperature measurement inside heat exhaust pipe

    A high definition sensor probe can be inserted into the exhaust to provide a full profile of temperature from tail pipe to exhaust manifold. A temperature sensor fiber can also be wound helically around the tail pipe. See related video

  • Spring
    Leaf spring, spring and strain measurement

    Springs are a key target for weight reductions and prime candidates for using alternate lightweight materials. Transitioning from metals to new lightweight materials, such as composites, presents a number of design challenges owing to their heterogeneous and non-uniform characteristics. The ability of HD-FOS to provide a full field view of strain is perfectly aligned with overcoming these challenges while mitigating risk.

  • Brakes
    Temperature distribution on brakes

    As in many automotive applications temperature dictates the performance limit of brakes. Brakes undergo rapid transients in temperature and these transients are not evenly distributed throughout the brake material. HD-FOS can provide a thermal profile across the brakes contacting surfaces under all operating conditions helping to insure that the design margin is not too little, or too excessive.

Civil

The global megatrends of climate change, urbanization and resource scarcity are creating unprecedented societal challenges that will only be overcome through new innovative technologies in infrastructure and industry. High definition fiber optic sensing (HD-FOS) is a revolutionary technology that will help pave the way for innovation in the civil and industrial markets.

The spectrum of applications for high definition fiber optic sensing is broad and captures all of the core value propositions including, high density data, electrical and corrosion resistance and the ability to be embedded within structures.

  • Concrete
    Concrete is just another composite

    Concrete structures share many of the same attributes as composites and for large civil structures HD-FOS can be equally valuable. With its ability to be embedded or bonded to the surface of structures under load, the high density data can pinpoint the exact moment of a crack’s initiation long before it becomes visible to the eye.

  • Chemical Processing
    Optimising new chemical processes

    Building full scale processing plants for refining or processing chemicals is an expensive and risky endeavor. Processes must be fully optimized before ground is broken and investments are made. HD-FOS temperature sensing is the ideal solution for measuring the temperature gradients and phase changes within the many heat exchangers and reactors used in chemical processing. Fiber sensors are also corrosion proof and induce no source of ignition.

  • Transport
    An indispensable tool for breakthrough transport technologies

    Developing high performance machines requires high performance development tools and in the twenty first century HD-FOS will be in the tool box for any engineer working on the frontier of design. Like many applications in transportation, high speed rail benefits from the full range of HD-FOS capabilities, from measuring strain on lightweight materials to measuring temperature on inverters and batteries.

  • Building
    Building composites with intelligent fibers for structural health monitoring

    Composite materials are being used across industries including piping and beams for the construction industry. A fiber sensor at only 150 microns in diameter can be embedded in composite pipes, beams and tanks during their fabrication and can be used to measure strain over the service life the component.

Energy

Industry is undergoing a global transformation that will have a dramatic impact on the way electricity is used and produced. High definition fiber optic sensing (HD-FOS) is a 21st century design tool for the challenges of 21st century design validation.

  • Renewables
    Renewables focusing on advanced composites for wind turbine blade design

    In order to capture more power from the wind, wind turbine blades are increasing in length. Turbine blades are made with composite materials and undergo significant strain when turbines are operating at full power. HD-FOS sensors can be installed on the surface of the blade or embedded within during fabrication and provide turbine blade strain data under load or during the manufacturing and curing process.

  • Nuclear
    Robust sensors for challenging nuclear applications

    Nuclear power plants are one of the most challenging measurements environments and fiber optic sensing is well suited for applications in Nuclear.

  • Natural Gas
    New high temperature composite materials for gas turbine blade design

    Higher gas turbine efficiency means higher combustion gas temperatures. Historically these temperatures have been limited by the materials used for the turbine blade. Advances in ceramic composite materials have opened new possibilities for blade design. HD-FOS with its ability to provide high definition strain data under high temperature conditions is an excellent tool for engineers developing the next generation of gas turbine blades.

  • Oil and Gas
    High definition fiber sensing for multiple applications in oil & gas

    High definition fiber optic sensing is ideally suited for measuring temperature gradients in the reactors and heat exchangers used in small scale chemical processing pilot plants. For the refining and chemical processing market fiber optic sensing is corrosion resistant and introduces no ignition source.

Optical Distributed Sensor Interrogator (ODiSI)

The new ODiSI-B 5.0 is the result of continued engineering development and provides a number of valuable new capabilities including a new High-Speed CFG sensing option to support more dynamic testing environments.

ODiSI-B 5.0 – New Features

2 sensing options

2 sensing options: High-definition and High-speed CFG

High-Definition sensors offer a lower priced consumable sensor with ultra high spatial resolution; The High-Speed Continuous Fiber Gratings (CFG) option has greater dynamic sensing capability while still offering high spatial resolution.

High-Speed CFG module sold as option.

Ruggedised connectors

Robust sensing with ruggedised cable and connectors

Industrial grade stand-off cable and connectors are suitable for harsh environments and rough handling. The optical network has been upgraded and offers significantly higher tolerance to ambient vibration.

CAD integration

3D data visualisation with CAD integration

The high spatial resolution of the ODiSI reveals important information about test articles not visible with traditional sensing methods. Luna’s new data visualization tool set helps engineers to quickly identify key areas of interest, reduce file size, analyse data and generate reports.

See data visualization in action in videos here

3D data visualization package sold as option.

Strain sensor calibration

Strain sensors with NIST-Traceable calibration

Strain sensors are calibrated to NIST-traceable standards. A certificate of conformance is shipped with every strain sensor.

Luna ODiSI-B 5.0

Luna ODiSI-B 5.0

The ODiSI provides more than 1000 strain or temperature measurements per meter of a single high definition fiber sensor. The high definition data can fully map the contour of strain or temperature for a structure under test.

View ODiSI-B 5.0

Reflectometers (OBR)

Luna’s Optical Backscatter Reflectometer (OBR) delivers unprecedented inspection and diagnostic capabilities for the fiber optics industry. Luna’s state-of-the-art OBR provides isolation of faults and problems well before final test, saving hours in rework and hard dollars in yield loss.

Industry-leading 10 micron spatial resolution with zero dead-zone will pinpoint even the smallest contributors to loss: bends, crimps, bad splices, you name it — we find it. The distributed sensing option provides even a more complete picture of what’s happening in the system. Discover what you don’t know about your component and what Luna’s OBR can do for you.

Measurement highlights

  • High resolution OFDR – Resolve individual features with spatial resolution down to 10 microns.
  • High sensitivity – 70 dB of dynamic range and -130 dB sensitivity.
  • Long range – Measure up to 2000 meters in length with a single connection, single scan.
  • Single Connection IL and RL – Measure insertion and return loss in a single scan.
  • Locate loss events – Monitor backscatter levels to isolate losses due to bends, crimps, bad splices, etc.
  • “Look inside” devices – High resolution and sensitivity enable inspection of individual components within a subsystem.
  • Polarization Tracking – Track changes in the state-of-polarization as light propagates through an optical network.
  • Intuitive graphical interface – All key data and graphs in a simple, easy to use interface.
  • Distributed sensing – Use standard optical fiber to monitor the changes in temperature and strain
Luna Optical Backscatter Reflectometer (OBR)

Luna OBR 4600

Designed for component testing, short run network testing and troubleshooting, the OBR 4600 enables ultra high resolution reflectometry with backscatter level sensitivity. The OBR 4600 has spatial resolution as fine as 10 microns and no deadzone. Extensive range of options including a strain and temperature sensing package with maximum sensor lengths up to 2 kilometers.

View OBR 4600

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  1. Luna OBR 4600 Optical Backscatter Reflectometer

    Ships in 15 to 20 Business Days

    SKU # OBR 4600
  2. Luna ODiSI-B 5.0 Optical Distributed Sensor Interrogator

    Ships in 15 to 20 Business Days

    SKU # ODiSI-B 5.0
  3. NEW
    Luna ODiSI 6100 Multichannel Optical Distributed Sensor Interrogator

    Luna ODiSI 6100 Multichannel Optical Distributed Sensor Interrogator

    Ships in 15 to 20 Business Days

    SKU # ODiSI 6100
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