首页|A suspended FBG damage detection sensor based on magnetic drive
A suspended FBG damage detection sensor based on magnetic drive
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NSTL
Elsevier
This paper presents a high sensitivity displacement sensor that applies magnetic force to a suspended fiber Bragg grating (FBG), which can be used to measure micron displacement and reconstruct the morphology of damaged surface. In this paper, the sensor model is established, and a series of static and dynamic experiments are carried out. The static results show that the sensor has a sensitivity of 0.47 pm/mu m in the range of 0-1 mm, and the maximum relative error is less than 5.2%. In the response experiment of typical signal, the adjustment time of step response is less than 1.5 s, and steady-state error is less than 1.2 pm. The scanning experiment can reconstruct the image perfectly. All the results mean that the sensor provides a new solution to surface damage detection.
NSTL
Elsevier
