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Fiber Bragg grating (FBG) sensors have attracted a lot of interest for the past few years, and there were number of studies on the use of FEA to forecast and calculate the strain of metalwork. This paper describes the strain test of Aluminum suspension beam used in CRH railway vehicle with FBG and FEA. Strain distribution of the steelwork is predicted through Finite element analysis and fatigue test...
We have proposed the use of a single bent singlemode -multimode-singlemode (SMS) fiber structure to measure both displacement and temperature simultaneously and independently. Our experimental results show that this sensor has a sensitivity of 5.89 pm/μm for displacement and 11.6 pm/°C for temperature.
We report an experimental study of a SMS fiber sensor for simultaneously measuring both displacement and temperature. By measuring both peak wavelength spectral shifts and peak power variations, displacement and temperature can be independently determined with a demonstrated sensitivity to displacement of 16.14 pm/μm and a temperature sensitivity of 10.16 pm/ °C.
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