Author:
Karatas Cansu,Degerliyurt Boray,Yaman Yavuz,Sahin Melin
Abstract
Purpose
Structural health monitoring (SHM) has become an attractive subject in aerospace engineering field considering the opportunity to avoid catastrophic failures by detecting damage in advance and to reduce maintenance costs. Fibre Bragg Grating (FBG) sensors are denoted as one of the most promising sensors for SHM applications as they are lightweight, immune to electromagnetic effects and able to be embedded between the layers of composite structures. The purpose of this paper is to research on and demonstrate the feasibility of FBG sensors for SHM of composite structures.
Design/methodology/approach
Applications on thin composite beams intended for SHM studies are presented. The sensor system, which includes FBG sensors and related interrogator system, and manufacturing of the beams with embedded sensors, are detailed. Static tension and torsion tests are conducted to verify the effectiveness of the system. Strain analysis results obtained from the tests are compared with the ones obtained from the finite element analyses conducted using ABAQUS® software. In addition, the comparison between the data obtained from the FBG sensors and from the strain gauges is made by also considering the noise content. Finally, fatigue test under torsion load is conducted to observe the durability of FBG sensors.
Findings
The results demonstrated that FBG sensors are feasible for SHM of composite structures as the strain data are accurate and less noisy compared to that obtained from the strain gauges. Furthermore, the convenience of obtaining reliable data between the layers of a composite structure using embedded FBG sensors is observed.
Practical implications
Observing the advantages of the FBG sensors for strain measurement will promote using FBG sensors for damage detection related to the SHM applications.
Originality/value
This paper presents applications of FBG sensors on thin composite beams, which reveal the suitability of FBG sensors for SHM of lightweight composite structures.
Reference20 articles.
1. Structural health monitoring – an introduction and definitions,2009
2. Fiber-optically sensorized composite wing, SPIE smart structures and materials+ nondestructive evaluation and health monitoring;Proceedings of SPIE - International Society for Optics and Photonics,2014
3. Değerliyurt, B. (2017), “Development and experimental verification of a structural health monitoring system for composite beams with embedded fibre bragg grating sensors”, M.S. thesis, Middle East Technical University, Ankara.
4. Fibre optic sensors for structural health monitoring of aircraft composite structures: recent advances and applications;Sensors,2015
5. Fiber optic sensors for structural health monitoring of air platforms;Sensors (Basel, Switzerland),2011
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