Rapid prototyping of FBG-based optical sensors for vibration analysis of mechatronic systems

The detection and study of vibrations play a fundamental role in the monitoring and safety of engineering systems. This is especially true in the aerospace sector, where the operating environment is often hostile, and the constraints on weights and dimensions are very tight. For these reasons, the r...

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Bibliographic Details
Published in:Journal of physics. Conference series 2024-02, Vol.2698 (1), p.12004
Main Authors: Dalla Vedova, Matteo D L, Quattrocchi, Gaetano, Aimasso, Alessandro, Marotta, Antonio, Ferro, Carlo G, Maggiore, Paolo
Format: Article
Language:English
Subjects:
Aerospace industry
Bragg gratings
Electromagnetic interference
Finite element method
High resistance
Manufacturing
Optical communication
Optical fibers
Optical measuring instruments
Rapid prototyping
Sensors
Signal transmission
Three dimensional printing
Vibration analysis
Vibration monitoring
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Summary:The detection and study of vibrations play a fundamental role in the monitoring and safety of engineering systems. This is especially true in the aerospace sector, where the operating environment is often hostile, and the constraints on weights and dimensions are very tight. For these reasons, the research and application of sensors based on optical signal transmission are becoming increasingly important. The opportunity to implement distributed measurements along a single optical fiber, the small size and weight, and the high resistance to electromagnetic interference make this technology an ideal candidate for the development of next-generation aerial platforms. In this paper, the authors focus on designing and developing a novel sensor that employs Fiber Bragg Grating (FBG) for vibration detection. Their primary aim is to explore the potential and constraints of this technology and build an initial prototype for testing purposes. Additionally, the project enabled the authors to experiment with rapid prototyping techniques that rely on 3D printing and additive manufacturing. The impact of various design choices, such as materials, geometry, and manufacturing, on the demonstrator sensitivity was explored by analysing the problem mathematically. A Matlab script was developed to estimate dimensions, weights, and dynamic performances, and modelling FEM was used for validation.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2698/1/012004