Please use this identifier to cite or link to this item: https://ktisis.cut.ac.cy/handle/10488/10955
Title: Carbon Cantilever Beam Health Inspection Using a Polymer Fiber Bragg Grating Array
Authors: Theodosiou, Antreas 
Komodromos, Michael Z. 
Kalli, Kyriacos 
Keywords: Femtosecond laser;Fibre Bragg gratings;Polymer fibre;Structural monitoring;Vibration measurements
Category: Electrical Engineering - Electronic Engineering - Information Engineering
Field: Engineering and Technology
Issue Date: 15-Feb-2018
Publisher: Institute of Electrical and Electronics Engineers Inc.
Source: Journal of Lightwave Technology, 2018, vol.36, no.4, pp.986-992
DOI: https://doi.org/10.1109/JLT.2017.2768414
Journal: Journal of Lightwave Technology 
Abstract: We demonstrate a quasi-distributed sensor for cantilever health inspection measurements using a fiber Bragg grating (FBG) array inscribed in a polymer optical fiber. The FBGs were characterized and calibrated for axial strain, temperature, and relative humidity prior to their mounting on a carbon cantilever beam, the tail rotor of a helicopter. By using the zero-crossing demodulation algorithm, we recovered the time-dependent, wavelength response from each Bragg grating sensor and the vibration response of the beam was extracted. We used the response of the beam to study how the addition of masses at different positions on the beam influences the vibrational behavior and mimics the location of 'damage' through the time-dependent results. We show that health inspection measurements are feasible with polymer-based fiber Bragg gratings, offering accurate and rapid detection of damage points on a structural beam.
ISSN: 0733-8724 (print)
1558-2213 (online)
DOI: 10.1109/JLT.2017.2768414
Rights: © 2017 IEEE.
Type: Article
Appears in Collections:Άρθρα/Articles

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