基于光纤布拉格光栅传感器的光电复合缆绳应变测量 下载: 699次
Strain Measurement of Photoelectric Composite Cable Based on Fiber Bragg Grating Sensor
1 天津大学机械工程学院力学系, 天津 300354
2 天津市非线性动力学与混沌控制重点实验室, 天津 300354
图 & 表
图 1. 光电复合缆绳的截面示意图
Fig. 1. Cross-sectional schematic diagram of a photoelectric composite cable
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图 2. 粘贴FBG传感器的光电复合缆绳
Fig. 2. Photoelectric composite cable with FBG sensor
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图 3. 光纤横截面受到的横向作用力F
Fig. 3. Lateral force F on the fiber cross section
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图 4. 粘贴在复合缆绳上的FBG传感器
Fig. 4. FBG sensor pasted on the composite cable
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图 5. 粘贴在胶皮上的FBG波长变化曲线(d1=80.08 mm)
Fig. 5. Wavelength variation curve of FBG pasted on the rubber surface (d1=80.08 mm)
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图 6. 粘贴在铜芯上的FBG波长变化曲线(d1=80.08 mm)
Fig. 6. Wavelength variation curve of FBG pasted on the copper core (d1=80.08 mm)
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图 7. 用环氧树脂胶粘贴在铜芯上的FBG波长变化曲线(d1=40.06 mm)
Fig. 7. Wavelength variation curve of FBG pasted on copper core with epoxy resin glue (d1=40.06 mm)
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图 8. 用705胶粘贴在铜芯上的FBG波长变化曲线(d1=40.06 mm)
Fig. 8. Wavelength variation curve of FBG pasted on copper core with 705 glue (d1=40.06 mm)
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图 9. 相对中心波长偏移量与曲率的关系
Fig. 9. Relationship between relative center wavelength shift and curvature
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表 1粘贴在胶皮表面的FBG波长漂移量
Table1. Wavelength drift of FBG pasted on the rubber surface
Curvature radius /mm | Initial valueλ0 /nm | Maximum value λm /nm | SteadyFBG1 λs /nm | AverageFBG2 λa /nm | Wavelength shift Δλ /nm |
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FBG1 | FBG2 | FBG1 | FBG2 |
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50.02 | 1564.1697 | 1565.4012 | 1565.4483 | 1565.1530 | 1565.2046 | 0.9833 | 1.0349 | 45.01 | 1564.1771 | 1565.4927 | 1565.5745 | 1565.2027 | 1565.2788 | 1.0256 | 1.1017 | 40.04 | 1564.1583 | 1565.9230 | 1566.1008 | 1565.6928 | 1565.7577 | 1.5345 | 1.5994 | 35.01 | 1564.1516 | 1566.0073 | 1565.8387 | 1565.5198 | 1565.6402 | 1.3682 | 1.4886 | 30.03 | 1564.1630 | 1566.3853 | 1566.4726 | 1566.2689 | 1566.2847 | 2.1059 | 2.1217 | 25.00 | 1564.1487 | 1566.4569 | 1566.8587 | 1566.0418 | 1566.4784 | 1.8931 | 2.3297 | 20.03 | 1564.1322 | 1567.6144 | 1567.7252 | 1567.3874 | 1567.4358 | 3.2552 | 3.3036 |
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表 2粘贴在铜芯上的FBG波长漂移量
Table2. Wavelength drift of FBG pasted on the copper core
Curvature radius /mm | Initial valueλ0 /nm | Maximum value λm /nm | SteadyFBG1 λs /nm | AverageFBG2 λa /nm | Wavelength shift Δλ /nm |
---|
FBG1 | FBG2 | FBG1 | FBG2 |
---|
50.02 | 1564.1119 | 1564.4705 | 1564.7631 | 1564.3064 | 1564.5705 | 0.1945 | 0.4586 | 45.01 | 1564.1661 | 1564.6783 | 1564.6907 | 1564.3902 | 1564.4263 | 0.2241 | 0.2602 | 40.04 | 1564.1519 | 1564.7126 | 1564.9375 | 1564.4057 | 1564.5046 | 0.2538 | 0.3527 | 35.01 | 1564.1859 | 1564.7577 | 1564.7623 | 1564.4030 | 1564.5212 | 0.2171 | 0.3353 | 30.03 | 1564.1453 | 1564.6126 | 1564.9738 | 1564.4373 | 1564.6606 | 0.2920 | 0.5153 | 25.00 | 1564.1567 | 1564.6389 | 1565.1233 | 1564.4586 | 1564.7432 | 0.3019 | 0.5865 | 20.03 | 1564.1755 | 1564.8346 | 1565.4011 | 1564.5189 | 1564.7233 | 0.3434 | 0.5478 |
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表 3使用705软硅胶封装的FBG波长漂移量
Table3. FBG wavelength drift using 705 soft silicone package
Curvatureradius /mm | Initial wavelengthλ0 /nm | Maximum wavelengthλm /nm | Steady wavelengthλs /nm | Wavelength shiftΔλ /nm |
---|
50.02 | 1564.1182 | 1564.8247 | 1564.7060 | 0.5878 | 45.01 | 1564.1231 | 1564.8730 | 1564.7915 | 0.6684 | 40.04 | 1564.1207 | 1564.9846 | 1564.9027 | 0.7820 | 35.01 | 1564.1194 | 1565.1855 | 1565.0625 | 0.9431 | 30.03 | 1564.1205 | 1565.3824 | 1565.1978 | 1.0773 | 25.00 | 1564.1226 | 1565.6981 | 1565.3792 | 1.2566 | 20.03 | 1564.1214 | 1565.9744 | 1565.6867 | 1.5653 |
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表 4FBG的回差实验结果
Table4. Backlash test results of FBG
Curvature radius /mm | 1st | 2nd | 3rd |
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Forward /nm | Backward /nm | Forward /nm | Backward /nm | Forward /nm | Backward /nm |
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50.02 | 1564.7057 | 1564.7068 | 1564.7061 | 1564.7067 | 1564.7054 | 1564.7065 | 45.01 | 1564.7909 | 1564.7941 | 1564.7907 | 1564.7944 | 1564.7909 | 1564.7942 | 40.04 | 1564.9027 | 1564.9131 | 1564.9023 | 1564.9136 | 1564.9022 | 1564.9138 | 35.01 | 1565.0625 | 1565.0783 | 1565.0622 | 1565.0787 | 1565.0624 | 1565.0784 | 30.03 | 1565.1978 | 1565.2194 | 1565.1974 | 1565.2193 | 1565.1977 | 1565.2189 | 25.00 | 1565.3792 | 1565.3921 | 1565.3789 | 1565.3927 | 1565.3790 | 1565.3925 | 20.03 | 1565.6862 | 1565.6887 | 1565.6863 | 1565.6882 | 1565.6859 | 1565.6885 |
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表 5FBG的反向弯曲实验结果
Table5. Reverse bending experiment result of FBG
Curvatureradius /mm | Initial wavelengthλ0 /nm | Minimum wavelengthλm /nm | Steady wavelengthλs /nm | Wavelength shiftΔλ /nm |
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50.02 | 1564.1712 | 1563.5793 | 1563.6076 | -0.5636 | 45.01 | 1564.1686 | 1563.4520 | 1563.5005 | -0.6681 | 40.04 | 1564.1657 | 1563.2501 | 1563.4309 | -0.7348 | 35.01 | 1564.1749 | 1563.1944 | 1563.3695 | -0.8054 |
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陶冶, 张素侠. 基于光纤布拉格光栅传感器的光电复合缆绳应变测量[J]. 中国激光, 2020, 47(10): 1010004. Tao Ye, Zhang Suxia. Strain Measurement of Photoelectric Composite Cable Based on Fiber Bragg Grating Sensor[J]. Chinese Journal of Lasers, 2020, 47(10): 1010004.