Infrared and Laser Engineering, Volume. 50, Issue 5, 20200315(2021)
Strain transfer characteristics of fiber Bragg grating sensor in aerostat flexible composite skin deformation
Figures & Tables(16)
Fig. 2. Schematic diagram of force transfer of three-layer structure
Fig. 5. Error curves between theoretical value and simulated value
Fig. 6. Comparison of results of maximum strain transfer rate and average strain transfer rate of FBG sensors with different gauge lengths
Fig. 7. Effect of adhesive layer width
Fig. 8. Effect of the thickness of the upper (lower) adhesive layer on the average strain transfer rate
Fig. 9. Effect of elastic modulus of adhesive layer on the average strain transfer rate
Fig. 10. Effect of Poisson’s ratio of adhesive layer on average strain transfer rate
Fig. 11. Effect of elastic modulus of skin structure on average strain transmission rate
Fig. 12. Effect of skin structure thickness on average strain transfer rate
Table 1. Material parameters of each layer structure
View tableView in ArticleTable 1. Material parameters of each layer structure
FBG Adhesive layer Skin structure Elastic modulus/Pa $7.2 \times {10^{10}}$ $3.0 \times {10^9}$ $3.59 \times {10^9}$ Poisson's ratio 0.17 0.35 0.3
Table 2. Structure parameters of pasted layer
View tableView in ArticleTable 2. Structure parameters of pasted layer
Parameters Value range Half length of adhesive layer/mm 5-20 Width of adhesive layer/mm 0-10 Thickness of upper adhesive layer/mm 0-1 Thickness of lower adhesive layer /mm 0-1 Elastic modulus/GPa 0-1 Poisson's ratio 0.2-0.5
Table 3. Skin structure parameters
View tableView in ArticleTable 3. Skin structure parameters
Structural parameters Value range Elastic modulus/Pa 1.75-3.59 Skin thickness/mm 0.5-4.5
Table 4. FBG sensing structure parameter selection
View tableView in ArticleTable 4. FBG sensing structure parameter selection
Parameters Value range Half length of adhesive layer/mm 20 Width of adhesive layer/mm ≥6 Thickness of upper adhesive layer/mm 0.2 Thickness of lower adhesive layer/mm 0.1 Elastic modulus/GPa 0.5
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Bingfeng Liu, Mingli Dong, Guangkai Sun, Yanlin He, Lianqing Zhu. Strain transfer characteristics of fiber Bragg grating sensor in aerostat flexible composite skin deformation[J]. Infrared and Laser Engineering, 2021, 50(5): 20200315
Paper Information
Category: Photoelectric measurement
Received: Dec. 13, 2020
Accepted: --
Published Online: Aug. 13, 2021
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