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Title: Development of a FBG based hoop-strain sensor using 3D printing method
Authors: Hong, CY
Zhang, YF
Su, D
Yin, Z 
Issue Date: 2019
Source: IEEE access, 2019, v. 7, p. 107154-107160
Abstract: In this study, a hoop-strain sensor was developed by embedding a bare fiber Bragg grating (FBG) sensor inside 3D printed Polylactic Acid (PLA) filament. Fabrication process of the hoop-strain sensor indicates that the initial temperature of the melted PLA is around 50 degrees C which is obviously lower than the printing temperature of the printer nozzle (around 200 degrees C). A typical residual wavelength was found after the fabrication process of the hoop-strain sensor. The shrinkage deformation of the present sensor was around 208 mu epsilon after fabrication. The hoop-strain sensor was flexible and can be used to measure both circumferential strain change and contact pressure between hoop-strain sensors and cylinders. Calibration tests for elongation measurement indicate that the sensitivity and minimum resolution with respect to strain change are 4.04 nm/% and 3.574 mu epsilon, respectively. The obtained measurement sensitivity and resolution for pressure measurement were 0.0035 nm/kPa, and 0.286 kPa, respectively. The maximum measurement ranges of the hoop-strain sensor for strain and pressure measurement are larger than 1% and 800 kPa, respectively.
Keywords: Hoop-strain sensor
Fiber Bragg grating
3D printing
Polylactic acid
Circumferential strain
Publisher: Institute of Electrical and Electronics Engineers
Journal: IEEE access 
ISSN: 2169-3536
DOI: 10.1109/ACCESS.2019.2933568
Rights: This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see
The following publication C. Hong, Y. Zhang, D. Su and Z. Yin, "Development of a FBG Based Hoop-Strain Sensor Using 3D Printing Method," in IEEE Access, vol. 7, pp. 107154-107160, 2019 is available at
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