Damage identification using modal strains identified from operational fiber-optic Bragg grating data
نویسندگان
چکیده
منابع مشابه
Fiber Optic Bragg-Grating Sensors
In-fibre Bragg gratings are sensor elements which are photo-written into optical fibre using intense ultra-violet laser beams and have the potential for the measurement of strain/deformation and temperature with applications reported including monitoring of highways, bridges, aerospace components and in chemical and biological sensors. The development of a fiber Bragg grating (FBG) measuring sy...
متن کاملFiber Bragg grating sensors - based mechanical structure damage identification
Mingyao Liu*, Zude Zhou**, Yuegang Tan***, An Ling****, Menglong Ke***** *Wuhan University of Technology, 430070 Wuhan, China, E-mail: [email protected] **Wuhan University of Technology, 430070 Wuhan, China, E-mail: [email protected] ***Wuhan University of Technology, 430070 Wuhan, China, E-mail: [email protected] ****Wuhan University of Technology, 430070 Wuhan, China, E-mail: liangan1008@163....
متن کاملAcousto-optic superlattice modulator using a fiber Bragg grating.
A modulator is reported in which an extensional acoustic wave is launched along a fiber Bragg grating. The acousto-optic superlattice effect causes an enhancement in reflectivity within a narrow spectral region on both sides of the Bragg wavelength. For a fixed acoustic propagation direction, the Doppler shift can be either positive or negative, depending on whether the wavelength of the incide...
متن کاملPost-Impact Fatigue Damage Monitoring Using Fiber Bragg Grating Sensors
It has been shown that impact damage to composite materials can be revealed by embedded Fiber Bragg Gratings (FBG) as a broadening and splitting of the latter's characteristic narrow peak reflected spectrum. The current work further subjected the impact damaged composite to cyclic loading and found that the FBG spectrum gradually submerged into a rise of background intensity as internal damages...
متن کاملFiber Optic Fabry-Perot Current Sensor Integrated with Magnetic Fluid Using a Fiber Bragg Grating Demodulation
An optical fiber current sensor based on Fabry-Perot interferometer using a fiber Bragg grating demodulation is proposed. Magnetic fluid is used as a sensitive medium in fiber optical Fabry-Perot (F-P) cavity for the optical characteristic of magnetic-controlled refractive index. A Fiber Bragg grating (FBG) is connected after the F-P interferometer which is used to reflect the optical power at ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Structural Health Monitoring
سال: 2017
ISSN: 1475-9217,1741-3168
DOI: 10.1177/1475921717744480