This product is a FBG stress sensor (FBG stress gauge) that is encapsulated in seamless steel tubes or polymer materials for stress measurement. It can be designed as a single-ended structure for insertion into the tested object for stress measurement, or as a double-ended structure for immersion or surface attachment to enable multiple-point stress measurement in series. The structure of this product is the same as various fiber optic grating strain sensors.
This is a companion discussion topic for the original entry at https://www.ofscn.net/fbg-products/stress-sensor
This technical summary provides additional details regarding the OFSCN® Fiber Bragg Grating (FBG) Stress Sensor mentioned in the post.
Technical Principle and Application
The OFSCN® Fiber Bragg Grating Stress Sensor is a specialized application of the FBG strain sensor. The physical relationship used for measurement is:
Measured Object Stress = Elastic Modulus of the Object × Measured Strain.
Because of this relationship, the internal structure of the stress sensor is identical to various OFSCN® Fiber Bragg Grating strain sensors, with the primary difference lying in the data calculation and calibration constants provided.
Key Features
- Encapsulation Options: Available in alloy tube (seamless steel) or polymer materials depending on the environmental requirements.
- Structure: Can be configured as single-ended (for insertion) or double-ended (for series multi-point measurement).
- Calibration: These sensors are typically calibrated for strain-wavelength sensitivity (unit: με/pm). Users input the specific elastic modulus of their target material into the OFSCN® Fiber Bragg Grating Interrogator to display real-time stress values.
- Installation: Compatible with various OFSCN Installation Fixtures for surface mounting, welding, or embedding.
Product Visuals
| Alloy Tube Type (Single Ended) |
Polymer Encapsulated Type |
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For detailed mechanical parameters or customized gauge lengths, you may refer to the technical specifications on the official product pages.
