Laser & Optoelectronics Progress, Volume. 62, Issue 5, 0506006(2025)
A Metal Strain Rosette Sensor Using Ultra-Weak Fiber Bragg Grating
Fig. 1. Three-way strain rosette structures of UW-FBG fiber. (a) Equilateral triangle; (b) right triangle
Fig. 2. Simulation of metal strain rosette substrate. (a) Schematic diagram of force; (b) simulated result
Fig. 3. Deformations of different substrate models. Variation in deformations of (a) XY groove, and (b) XZ groove with groove depth when substrate thickness is 1.0 mm,and length of triangle side is 16 mm; variation in deformations of (c) XY groove, and (d) XZ groove with substrate thickness when groove depth is 0.5 mm, and length of triangle side is 16 mm; variation in deformations of (e) XY groove, and (f) XZ groove with length of triangle side when substrate thickness is 1.0 mm, and groove depth is 0.5 mm
Fig. 4. Multi-factor histogram of deformation for different models. (a) Deformation of bottom; (b) deformation of side
Fig. 6. UW-FBG metal strain rosette sensor. (a) Overall structure of sensor; (b) schematic diagram of welding
Fig. 9. Fitted curves of load and wavelength shift in OAB direction. (a) Test 1; (b) test 2; (c) test 3
Fig. 10. Fitted curves of load and wavelength shift in XYZ direction. (a) Test 1; (b) test 2; (c) test 3
Fig. 12. Fitted curves of load and wavelength shift in tensile experiments. (a) Test 1; (b) test 2; (c) test 3
Fig. 15. Fitted curves of load for different devices and wavelength shift or strain. (a) Fitted curves of load for strain rosette sensor and wavelength shift; (b) fitted curves of load for strain gauge and strain; (c) fitted curves of load for optic cable and wavelength shift
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Zhihui Luo, Jie Gao, Shaohua Deng, Xiaolong Wang, Yunrui He. A Metal Strain Rosette Sensor Using Ultra-Weak Fiber Bragg Grating[J]. Laser & Optoelectronics Progress, 2025, 62(5): 0506006
Category: Fiber Optics and Optical Communications
Received: Jun. 12, 2024
Accepted: Jul. 29, 2024
Published Online: Feb. 21, 2025
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CSTR:32186.14.LOP241468