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Cantilever-based biaxial FBG inclinometer with low cross-axis sensitivity.

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Bibliographic Details
Title: Cantilever-based biaxial FBG inclinometer with low cross-axis sensitivity.
Authors: RAMALINGAM, NIMALRAJH1, HANGTING YANG1, KOK-SING LIM1 kslim@um.edu.my, AHMAD, HARITH1,2
Source: Optica Applicata. 2024, Vol. 54 Issue 2, p189-203. 15p.
Subjects: Fiber Bragg gratings, Inclinometer, Cantilevers, Angles
Abstract: This work proposes and demonstrates a biaxial sensing inclinometer based on two FBGs surfacemounted on two separate thin cantilevers with a diminishable cross-axis sensitivity. The measured sensitivities for the inclination angles in the x-z plane and y-z plane are 34.87 and 33.49 pm/deg, respectively. To enhance the protection of the delicate FBGs and minimize axis-to-axis cross-sensitivity, the carbon-steel cantilevers are strategically arranged in a perpendicular configuration, resulting in an impressively low cross-sensitivity value of just 0.9275%. This alignment not only offers mechanical shielding but also ensures optimal performance and accuracy for the FBGs. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:This work proposes and demonstrates a biaxial sensing inclinometer based on two FBGs surfacemounted on two separate thin cantilevers with a diminishable cross-axis sensitivity. The measured sensitivities for the inclination angles in the x-z plane and y-z plane are 34.87 and 33.49 pm/deg, respectively. To enhance the protection of the delicate FBGs and minimize axis-to-axis cross-sensitivity, the carbon-steel cantilevers are strategically arranged in a perpendicular configuration, resulting in an impressively low cross-sensitivity value of just 0.9275%. This alignment not only offers mechanical shielding but also ensures optimal performance and accuracy for the FBGs. [ABSTRACT FROM AUTHOR]
ISSN:00785466
DOI:10.37190/oa240206