Application of FBG Sensing Technology in Structural Health Monitoring - Fiber Bragg Grating Application - FBG Sensor Application - FBG Demodulator Application
1, Overview of Structural Health Monitoring
Structural Health Monitoring (SHM) refers to the use of non-destructive sensing techniques on-site, analyzing the characteristics of structural systems, including structural responses, to detect damage or degradation in structures.
The objectives of Structural Health Monitoring are:
- Ensure the safety and reliability of structures.
- Extend the lifespan of structures.
- Reduce maintenance costs.
Key technologies employed in Structural Health Monitoring include:
- Sensor technology – OFSCN Fiber Bragg Grating Sensing Technology is a significant branch.
- Signal processing technology – OFSCN Fiber Optic Grating Interrogators effectively process signals returned by sensors.
- Damage identification technology – This varies across industries and cannot be simply summarized.
Video Introduction of Fiber Bragg Grating Sensing Hosts for Structural Health Monitoring
Applications of Structural Health Monitoring cover various fields, with widespread use across industries.
More details can be explored through the link below.
The use of Fiber Bragg Grating Sensing Technology in Structural Health Monitoring is an emerging discipline. With continuous technological advancements by DCYS and industry partners, its applications are expected to become more extensive.
Here are some notable applications of Structural Health Monitoring:
- In the United States, the Golden Gate Bridge utilizes a Structural Health Monitoring system to monitor the health of the bridge.
- In Europe, Airbus employs a Structural Health Monitoring system to monitor the structural condition of airplanes.
- In China, the Shanghai Tower utilizes a Structural Health Monitoring system to monitor the health of the building.
2, The main types of fiber Bragg grating sensors used in Structural Health Monitoring
In structural health monitoring, the following types of fiber optic grating sensor products are mainly used to monitor different physical quantities:
Fiber Bragg grating strain sensor: Used to measure the strain of the structure, which is the deformation caused by the force on the structure.
Video Introduction of Fiber Bragg Grating Strain Sensors for Structural Health Monitoring
Fiber Bragg grating temperature sensor: Used to monitor the temperature change of the structure, because the temperature change may affect the performance of the structure.
Video Introduction of Fiber Bragg Grating Temperature Sensors for Structural Health Monitoring
Fiber Bragg grating displacement sensor: Used to measure the displacement or vibration of the structure, which is very important for capturing the dynamic response of the structure.
Fiber Bragg grating pressure sensor: Used to measure the change of pressure or force on the structure or its components.
Fiber Bragg grating accelerometer: Used to monitor the acceleration change of the structure, which is very useful for analyzing the vibration characteristics of the structure.
Fiber Bragg grating humidity sensor: Used to detect the humidity change of the environment around the structure, humidity change may affect the performance of some structural materials.
The combination of these fiber optic grating sensor products can provide comprehensive structural health monitoring, enabling engineers and monitoring systems to timely and accurately assess the condition of the structure, and thus take necessary maintenance and repair measures.
3, Application Examples of FBG Sensing Technology in Structural Health Monitoring
Fiber bragg grating (FBG) sensing technology is a highly versatile and reliable method for structural health monitoring. By utilizing optical fibers that are embedded within or attached to a structure, fiber bragg grating (FBG) sensors can detect and measure changes in strain, temperature, pressure, and other environmental variables. This technology has found numerous applications in the field of structural health monitoring, some of which are listed below.
Structural monitoring of bridges
Bridges are critical components of our transportation infrastructure, and their safety and stability are of utmost importance. FBG sensors can be used to monitor the strain, temperature, and vibration of bridge components such as cables, girders, and piers. By continuously monitoring these parameters, engineers can detect any abnormalities or signs of deterioration in the bridge structure and take timely corrective measures.
Pipeline monitoring
Pipelines are used to transport various fluids such as oil, gas, and water over long distances. The structural integrity of pipelines is critical to prevent leaks, spills, and other accidents. FBG sensors can be used to monitor the strain and temperature of pipeline components such as valves, fittings, and joints. By detecting changes in these parameters, engineers can identify potential areas of weakness or failure and take corrective action before any damage occurs.
Aircraft structural health monitoring
The safety and reliability of aircraft are of paramount importance in the aviation industry. FBG sensors can be embedded within aircraft structures to monitor the strain, temperature, and vibration of critical components such as wings, fuselage, and engine mounts. By continuously monitoring these parameters, engineers can detect any signs of fatigue, cracking, or other forms of damage and take corrective measures to prevent catastrophic failures.
Wind turbine monitoring
Wind turbines are complex structures that are subject to harsh environmental conditions such as high winds, temperature fluctuations, and vibration. FBG sensors can be used to monitor the strain, temperature, and vibration of wind turbine components such as blades, towers, and nacelles. By detecting changes in these parameters, engineers can identify potential areas of weakness or failure and take corrective action before any damage occurs.
Structural monitoring of buildings
Buildings are subject to a wide range of environmental factors such as wind, temperature, and seismic activity. FBG sensors can be used to monitor the strain, temperature, and vibration of building components such as walls, floors, and columns. By continuously monitoring these parameters, engineers can detect any abnormalities or signs of deterioration in the building structure and take timely corrective measures.
In summary, FBG sensing technology has numerous applications in the field of structural health monitoring. Its ability to detect and measure changes in strain, temperature, pressure, and other environmental variables makes it a valuable tool for ensuring the safety and reliability of critical infrastructure components such as bridges, pipelines, aircraft, wind turbines, and buildings.