Resource Library

We have developed this library of resources to provide access to the tremendous amount of content that we have developed over the years. It includes product-specific literature, application-based technical resources, and media presentations of our unique technologies.

If you know which specific product or application you’re looking for, simply click on that link below and you’ll find in-depth content. Alternatively, you can use the search function to connect you to literature and media related to your specific interest.

Data Sheets

Title
Product Area
3DViz Data Visualization Software Data Sheet
  • ODiSI/HD-FOS
HD6S High-Definition Strain Sensor Data Sheet
  • ODiSI/HD-FOS
HD6T High-Definition Temperature Sensor
  • ODiSI/HD-FOS
High-Definition Strain Sensors Data Sheet
  • ODiSI/HD-FOS
ODiSI 6000 Series Data Sheet
  • ODiSI/HD-FOS
ODiSI Comparison Brochure
  • ODiSI/HD-FOS

User Guides

Title
Product Area
3DViz F3D Users Guide
  • ODiSI/HD-FOS
Short Summary
User Guide for 3DViz visualization software.
ODiSI 6100 User Guide
  • ODiSI/HD-FOS
ODiSI A User Guide
  • ODiSI/HD-FOS
ODiSI B User Guide
  • ODiSI/HD-FOS

Application Notes

Title
Product Area
Aerospace Testing: Appeal to the Sensors
  • ODiSI/HD-FOS
Short Summary
For years the aerospace industry has relied on foil strain gauges to test materials. But an emerging technology, fiber sensing, is offering advantages over more traditional methods.
Automotive Body in White Test with HD-FOS
  • ODiSI/HD-FOS
Short Summary
A white paper highlighting automotive frame testing using high definition fiber optic sensing.
Battery Testing with HD-FOS
  • ODiSI/HD-FOS
Short Summary
High-definition fiber optic sensing (HD-FOS) provides many advantages over outdated test methods for validating and improving battery technology.
Can Your Strain Gage or Thermocouple Do This?
  • ODiSI/HD-FOS
Short Summary
Simply embed or surface mount small, nearly weightless fiber optic sensors into your material or component, and directly measure stress, strain or temperature.
Distributed Fiber Optic Sensing: Applications in Composites Test and Measurement
  • ODiSI/HD-FOS
Short Summary
Applications illustrate how high spatial resolution HD-FOS measurements provide insight that cannot be practically achieved using single point sensors such as conventional foil strain gauges.
Distributed Fiber Optic Sensing: Measuring Strain Across Welds
  • ODiSI/HD-FOS
Short Summary
While traditional strain gages adhered to welds will average the strain across the gage area, HD-FOS sensing allows measurement of the strain profile across a weld with a very high spatial resolution. This engineering note demonstrates measurement of strain across the welding joints of a motorcycle handle bar instrumented with a fiber optic sensor.
Distributed Fiber Optic Sensing: Measuring Strain with PEEK-Buffered Fiber Optic Sensor
  • ODiSI/HD-FOS
Short Summary
Discusses strain measurements obtained from PEEK fiber compared to polyimide fiber, when bonded onto a fiberglass coupon and loaded in tension.
Distributed Fiber Optic Sensing: Measuring Temperature on a Printed Circuit Board
  • ODiSI/HD-FOS
Short Summary
Demonstrates distributed temperature measurements to identify points of failure on a printed circuit board
Distributed Fiber Optic Sensing: Strain Measurements on Powder Coated Metal
  • ODiSI/HD-FOS
Short Summary
Powder coating is a method for electrostatically binding dry powder onto surfaces. While providing better protection for surfaces, this tough finish makes it difficult and time consuming to sand off when preparing the surface for strain sensor bonding. This engineering note shows that fiber optic sensors give accurate strain measurements even when bonded directly onto well adhered powder coated surface
Distributed fibre-optic temperature and strain measurement with extremely high spatial resolution.
  • ODiSI/HD-FOS
Short Summary
Scanning the Rayleigh scattering along a length of optical fibre enables a distributed sensor system where every point along the fibre acts as a sensor. This novel method allows quasi-continuous measurement of temperature and strain profiles over distances of up to 50 m with millimeter spatial resolution.
Effects of Defects
  • ODiSI/HD-FOS
Short Summary
Aerospace Testing International article reviews how fiber optic strain sensing technology can detect defects during manufacture and fatigue cycling of composite structures.
Ensuring a Strong Thermoplastic Weld through Embedded Sensors
  • ODiSI/HD-FOS
Short Summary
Brief overview of using embedded high-definition fiber optic sensors to monitor and improve welding in real time.
Ensuring Performance from 3D Printed Parts through Embedded Sensors
  • ODiSI/HD-FOS
Short Summary
Brief overview of embedded sensors into 3D printed parts during printing for characterizing builds and enabling smart parts for in-service condition assessment.
High Density Fiber Optic Sensing (HD-FOS) in Composites
  • ODiSI/HD-FOS
Short Summary
Application note describing methods and details of embedding fiber sensors into composite parts.
High Resolution Thermal Profiling using ODiSI and HD-FOS
  • ODiSI/HD-FOS
Short Summary
Brief overview of using HD-FOS and ODiSI for easier and improved methods for high-resolution thermal profiling for furnaces.
In-situ Stress Rock Fracture Sensing with HD-FOS
  • ODiSI/HD-FOS
Short Summary
HD-FOS technology is enabling measurement of micro fracture formation in underground rock. The in-situ stress in the rock can be calculated from this data, providing valuable information for the oil & gas, geothermal, and geotechnical industries.
In-Vehicle Strain Monitoring for Control Arms in Dynamic Loading
  • ODiSI/HD-FOS
Measuring Liquid Level Using Fiber Optic Sensing
  • ODiSI/HD-FOS
Short Summary
Using HD-FOS sensors to measure liquid level change when there is a temperature difference between liquid and air.
Structural Health Monitoring: Angling for the Air
  • ODiSI/HD-FOS
Short Summary
CompositesWorld article describing how Luna's HD-FOS technology is on a glide path to implementation on in-service aircraft
Take the Worry Out of Lightweighting
  • ODiSI/HD-FOS
Short Summary
The ODiSI 6000 Series HD-FOS Accelerates Design and Testing with Sub-Millimeter Resolution Strain and Temperature Measurements.
Using HD-FOS for Characterizing Heat Exchangers
  • ODiSI/HD-FOS
Short Summary
This case study highlights using high definition temperature mapping for characterizing heat exchangers
Using HD-FOS for Defect Detection in Wind Turbine Blades During Fabrication and Testing
  • ODiSI/HD-FOS
Short Summary
This case study highlights using high definition fiber optic sensing for detecting defects in wind turbine blades.

Case Study

Title
Product Area
Using HD-FOS for Characterizing Heat Exchangers
  • ODiSI/HD-FOS
Short Summary
This case study highlights using high definition temperature mapping for characterizing heat exchangers
Using HD-FOS for Defect Detection in Wind Turbine Blades During Fabrication and Testing
  • ODiSI/HD-FOS
Short Summary
This case study highlights using high definition fiber optic sensing for detecting defects in wind turbine blades.

Videos

Title
Product Area
3D Strain Visualization: Carbon Fiber Beam using ODiSI B
  • ODiSI/HD-FOS
Short Summary
Using Luna’s ODiSI B system, real time strain measurements are acquired along a single telecom-grade optical fiber that is both surface bonded and embedded in a carbon fiber composite panel. Mapping Luna’s high resolution strain data onto a 3D model demonstrates the ability to use Luna’s high resolution data for 3D visualization and FEA model comparison.
3D Temperature Visualization: Pressure Canister using ODiSI B
  • ODiSI/HD-FOS
Short Summary
Using Luna’s ODiSI B system, real time temperature measurements are acquired along an optical fiber that is helically wrapped around the canister. Mapping this high resolution temperature data onto a 3D model demonstrates the ability to use Luna’s high resolution data for 3D visualization and FEA model comparison.
Bonding Fiber Sensors to a Test Article
  • ODiSI/HD-FOS
Short Summary
Step by step procedure for how to bond fiber (HD-FOS sensors) to a test article surface.
Demonstration of an ODiSI on a Cantilever Beam
  • ODiSI/HD-FOS
Short Summary
A small cantilevered beam demonstration shows strain correlation between a tradition foil gage to a fiber optic sensor. Excellent correlation is shown between the two foil gages and the fiber, however the fiber is able to show the full strain profile of the beam.
How to Perform the Touch to Locate Process with ODiSI
  • ODiSI/HD-FOS
Short Summary
Step by step procedure for how to do touch-to-locate on a test article using the ODiSI B system.
Radiator Temperature with HD-FOS Video
  • ODiSI/HD-FOS
Short Summary
Temperature profile on a radiator when circulating cold water and when a heat gun is applied to the surface.

Tech Notes

Title
Product Area
Distributed Fiber Optic Sensing: Temperature Coefficient for Polyimide Coated Low Bend Loss Fiber, in the -40°C to 200°C Range
  • ODiSI/HD-FOS
Short Summary
Methods employed to obtain a temperature coefficient for polyimide coated low bend loss fiber, in the -40°C - 200°C range.
Distributed Fiber Optic Sensing: Temperature Coefficient for Polyimide Coated Low Bend Loss Fiber, in the 10°C - 80°C Range
  • ODiSI/HD-FOS
Short Summary
This Engineering Note describes the methods employed in obtaining a temperature coefficient for polyimide coated low bend loss fiber, in the 10°C - 80°C range.
Fatigue Performance Comparison between OFDR-based Distributed Fiber Optic Sensing and Strain Gages
  • ODiSI/HD-FOS
Short Summary
Compares strain measurement in high strain range, cyclic loading between fiber and foil gage, showing foil gage drifting from the start
ODiSI Fiber Optic Sensor Installation Guide
  • ODiSI/HD-FOS
Short Summary
This applications note is the instruction manual for the fiber optic sensor application kit.
ODiSI Fiber Optic Sensor Installation Guide
  • ODiSI/HD-FOS
Short Summary
This document guides users of Luna’s High Definition Fiber Optic Sensing (HD-FOS) system (the ODiSI) through the simple process of mounting a fiber sensor onto the surface of a test article.
ODiSI Fiber Optic Sensor Protection Methods for Improved Durability
  • ODiSI/HD-FOS
Short Summary
This Technical Note demonstrates some protective options available to preserve the integrity of both the bonded fiber sensor sections as well as the sensor lead and connector.
ODiSI-B Sensor Strain Gage Factor Uncertainty
  • ODiSI/HD-FOS
os3150 Sensor Information Sheet
  • ODiSI/HD-FOS
Temperature Compensation of Strain Measurement
  • ODiSI/HD-FOS
Short Summary
This Tech Note describes some methods that can be employed to correct for this temperature-induced apparent strain. Various compensation schemes are discussed, based on fiber layout and environmental conditions.

Published Papers

Title
Product Area
Accuracy and Survivability of Distributed Fiber Optic Temperature Sensors
  • ODiSI/HD-FOS
Short Summary
Describes tests and results associated with temperature coefficients of fiber sensors.
Abstract

Obtaining a high accuracy, high spatial resolution temperature profile of critical test artifacts and test components has long been the holy grail of temperature sensing. Optical Frequency-Domain Reflectometry (OFDR) facilitates the use of unaltered optical fiber as high resolution distributed temperature sensors. Coating selection is a major parameter to consider in determining the best sensor choice based on the operating environment, especially the temperature range. We assess the performance of several fiber sensor coatings for the purpose of converging to the best sensor option for the -40°C to 200°C range. Stripped and carbon coated fiber maintain uniformity through the temperature cycles, resulting in accuracies of +/-0.5°C. A packaged fiber sensor was also held at 551°C for 3000 hrs to measure its performance over time. The survivability and accuracy of fiber sensors at high temperatures provide clear advantages compared to single point thermocouples in terms of displaying localized temperature variations.