Share Email Print
cover

Proceedings Paper

Strain measurement on the surface of diametrically loaded acrylic sphere with a distributed fiber optic sensor (Conference Presentation)
Author(s): Matthew Klegseth; Yi Bao; Genda Chen
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

In this study, a method for the deployment of a distributed fiber optic sensor on a spherical object is proposed. The optical cable was wrapped around a 114.3 mm diameter acrylic ball in a spiral formation. Two different loops were placed and fixed to the surface with either superglue or epoxy. The ball was loaded axially in a load frame and the tangential strain was measured using pulse pre-pump Brillouin optical time domain analysis (PPP-BOTDA). This data was compared with a numerical model and the suitability of this deployment scheme is discussed. Attempt will be made to correlate their notable difference with the curvature and installation procedure. Overall, the spiral shape allows for a predictable location of the fiber and both the epoxy and superglue maintain the required bond strength for strain transfer to the fiber. Although this study focuses on the effects of axial load, this deployment methodology can be used in other structural health monitoring applications such as spherical pressure vessels or other curved objects.

Paper Details

Date Published: 3 April 2018
PDF
Proc. SPIE 10598, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018, 105982B (3 April 2018); doi: 10.1117/12.2296626
Show Author Affiliations
Matthew Klegseth, Missouri Univ. of Science and Technology (United States)
Yi Bao, Missouri Univ. of Science and Technology (United States)
Genda Chen, Missouri Univ. of Science and Technology (United States)


Published in SPIE Proceedings Vol. 10598:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018
Hoon Sohn, Editor(s)

© SPIE. Terms of Use
Back to Top