A Pitman Style Fiber Bragg Grating Displacement Sensor Based on Wedge Cavity Structure
| Autor: | Zhang Chunwei, Song Yansheng, Su Zhongxin, Sun Li |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
business.product_category
Materials science Infill wall Acoustics 02 engineering and technology 021001 nanoscience & nanotechnology Wedge (mechanical device) Displacement (vector) 020303 mechanical engineering & transports 0203 mechanical engineering Fiber Bragg grating Interference (communication) Calibration Sensitivity (control systems) Structural health monitoring 0210 nano-technology business |
| Zdroj: | Robotics and Mechatronics ISBN: 9783030176761 |
| DOI: | 10.1007/978-3-030-17677-8_24 |
| Popis: | In this paper, a new design of fiber Bragg grating (FBG) displacement sensor is presented based on wedge cavity structure. A new type of pitman FBG displacement sensor with a simple structure, small size and anti-electromagnetic interference is invented. Calibration of the FBG displacement sensor is carried out. The calibrating data shows that the sensitivity is 5.58 pm/mm, adjusted R square is up to 0.99 and the static error is 5.168%. Moreover, the FBG displacement sensor is applied in the hysteresis test of steel frame-reinforced concrete infill wall. The monitoring results from the FBG displacement sensor in this test match well with the resistance strain displacement meter, to prove the FBG displacement sensor with a good accuracy. It is also showed that this new FBG displacement sensor produces smaller influence on the structure, and it is suitable for long-term displacement monitoring of engineering structures. |
| Databáze: | OpenAIRE |
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