A5018591298- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Fiscal Policy and Economic Growth
- Global trade and economics
- Semiconductor Lasers and Optical Devices
- Bladed Disk Vibration Dynamics
- Lubricants and Their Additives
- Photonic Crystal and Fiber Optics
- Economic Growth and Productivity
- Vibration and Dynamic Analysis
- Advanced Photonic Communication Systems
- Advanced Fiber Laser Technologies
Harbin Engineering University
2017-2018
A new directional bending sensor based on a dual side-hole fiber (DSHF) that can detect both the direction and magnitude of in self-temperature compensated manner is described experimentally demonstrated. The an in-fiber Mach-Zehnder interferometer (MZI), where DSHF segment was spliced between two standard single-mode fibers (SMFs) as input output. has orthogonal axes which are formed by asymmetry location offset fusion splice SMF DSHF. visibility MZI output intensity spectral shifts fringes...
The on-line measurement of oil-film pressure inside a journal bearing based on an optical fiber Bragg grating (FBG) is proposed and described for the first time. Two methods are described, one includes inserting packaged FBG into using rubber other involved being directly embedded surface. inserted method has higher sensitivity than version, while incurs less damage to small in size. Experiments verify feasibility both with parameters measured over full motor operating range. Experimental...
We proposed and demonstrated the measurement of oil film pressure a journal bearing based on Fiber Bragg Gratings (FBGs) for first time. FBG packaged by rubber was inserted into bearing, which used to sensing pressure, temperature in measured at same The experimental results were compared with theoretical shaft rotation speed from 140 r/min 1400 r/min, showing its capability doing our scheme. is expected have potential requirement strong electromagnetic environment.
We reported the vibration measurement of compressor blades by using fiber Bragg gratings. The low order modes were focused on and corresponding distributions FBGs designed. arrangement position grating sensor was determined analyzing strain distribution blade model in mode. It verified experiments that can identify lower blade. experimental results consistent with finite element based simulation terms eigen frequency signal intensity regularity at every each under results. bending torsional...
In this paper, two fiber reinforced polymer/plastic (FRP) encapsulated Bragg grating (FBG) sensors were installed on the sides of angle steel beam, which was used to measure displacement and direction diagonal so as realize health inspection structure. The re-spectively different positions relationship between strain transmission beam simulated by finite element analysis. optimum design installation discussed experimental verification carried out. simulation results show that sensor has...