Optical fiber Bragg grating (FBG)-based strain sensor embedded in different 3D-printed materials: A comparison of performance
Document Type
Article
Publication Date
1-1-2024
Abstract
A compact fiber Bragg grating (FBG)-based strain sensor has been developed by embedding an FBG inside a 3D-printed structure, allowing the comparison of FBG responses across different filaments such as polylactic acid (PLA), thermoplastic polyurethane (TPU), polycarbonate (PC), acrylonitrile butadiene styrene (ABS), and nylon. Results have shown that FBG embedded in TPU can be effective in the measurements of mechanical strain, giving a responsivity value of 17.70 pm/cm with outstanding linearity of 98 . Furthermore, small-scale field testing conducted in below-ground environments has shown that strain sensors based on FBG embedded in TPU are the most effective. They offer a responsivity of 13.9 pm/kg with a small standard deviation and high linearity. Additionally, they have the highest temperature sensitivity value of 15.4 pm/°C compared to the other embedded FBGs. Therefore, for most industrial applications, the FBG embedded in TPU can be considered as an alternative to existing embedment methods for strain sensing applications. © 2023
Keywords
3D printing technology, Acrylonitrile butadiene styrene, Fiber Bragg grating, Nylon, Polycarbonate, Polylactic acid, Strain sensor, Thermoplastic polyurethane
Divisions
PHYSICS,photonics
Funders
Malaysian Industry-Government Group for High Technology,Department for Business, Energy and Industrial Strategy, UK Government,Royal Academy of Engineering [Grant no. BKS002-2023, IIRG001A-2023]
Publication Title
Measurement: Journal of the International Measurement Confederation
Volume
225
Publisher
Elsevier B.V.