Optical Strain Sensor Fundamentals
Optical strain sensors, namely those based on Fiber Bragg Grating (FBG) technology, have been gaining increased attention particularly in the field of infrastructure monitoring over the past decades. But how does an optical sensor work? How do we compensate for optical losses? How many sensors can be integrated into one single fiber? Our experts dug deep to provide their best answers for you about all the important questions regarding strain measurement using fiber optical sensors. Click an option below to direct you to the content on the page.
- An Introduction to Optical Strain Measurements
- Basics of Fiber Bragg Grating (FBG) Technology
- Selecting the Right Strain Sensor, Adhesive and Accessories
- Installation of Optical Sensors: All there is to Know
- Applications of Optical Strain Sensors: Looking Beyond
- Acquiring Data with the Right Hardware and Software
- Free Training on Optical Strain Measurements
1. An Introduction to Optical Strain Measurements
Optical Strain Measurement Glossary
Strain Measurement with Fiber Bragg Grating Sensors
This paper gives a short introduction to FBG sensors, pointing out their special strengths and weaknesses. It also describes a measuring system which enables strain gauges and FBGs to be measured simultaneously, providing all data processing functions originally developed for the strain gauges also for the FBG signals.
Experimental Stress Analysis
Experimental Stress Analysis (ESA) is the analysis of the mechanical stress state in materials, which is performed though experiments using strain gauge measurements. Learn the existing types of stress, their origin and states, or how to determine stress from measured strains by reading about it below.
2. Basics of Fiber Bragg Grating (FBG) Technology
What is a Fiber Bragg Grating?
Article: How does an optical strain gauge actually work?
Fiber Bragg Grating Technology FAQs
Optical sensors based on Fiber Bragg Gratings (FBG) are becoming increasingly popular. They are easy to install, immune to electromagnetic interferences and can also be used in highly explosive atmospheres. But just how does a fiber Bragg grating work?
3. Selecting the Right Strain Sensor, Adhesives and Accessories
Optical Fiber Sensors
X120 FBG Sensor Adhesive
Optical Sensor Accessories
Accessories such as patch cables, pigtails, optical adapters, and more, are available from HBM FiberSensing to enable you to build up a complete optical measuring system in a quick and reliable manner.
4. Installation of Optical Strain Sensors: All There is to Know
Correct Welding of Strain Gauges
Some environments are not suitable for bonding strain gauges, e.g. because of very low temperatures or excessive dust formation, e.g. on construction sites. Weldable strain gauges are the best choice for being used in this type of environments.
Configuring optical strain sensors
One of the advantages of Fiber Bragg Grating (FBG) technology is its intrinsic multiplexing capability. The sensors can have both specific and different Bragg wavelengths and can be connected in series without compromising the correct reading of the measurements as long as the sensor signals do not overlap.
5. Applications of Optical Strain Sensors: Looking Beyond
Monitoring Solutions for Civil Engineering
Civil engineering structures are withstanding an exponential increase of applied loads, impacts and environmental burdens. The assessment of the resulting structural behavior is becoming mandatory so that faults can be detected in the early stages and safety is guaranteed.
Wind Turbine Monitoring
The requirements for both on- and offshore wind power turbine designs are constantly increasing.The efficiency of wind power depends on valid tests and measurement results which can minimize downtime and maximize service life.
Condition monitoring of wind turbines
Wind turbines are often subject to extreme mechanical stress. Condition Monitoring Systems (CMS) help ensure the stability, long service life, and optimal design of your wind turbine components (rotor blades, drivetrains, inverters…).
Optical Fiber Sensors vs. Conventional Electrical Strain Ga
6. Acquiring Data with the Right Hardware and Software
Optical Interrogators: for Fiber Optic Sensing
FBG sensors are easy to install, electromagnetically safe and can also be used in highly explosive atmospheres, but having the right interrogator in place is important to retrieve the most accurate measurements.
FS22: Industrial BraggMETER
7. Free Training on Optical Strain Measurements
Recorded International Webinars
HBM sensors, measuring amplifiers and software products are used worldwide in thousands of development projects and a wide range of industries. Our case studies gathered on this page show the diversity in which HBM products are used.