Proceedings ArticleDOI
Fiber optic Bragg grating array for shape and vibration mode sensing
Michael A. Davis,Alan D. Kersey,James S. Sirkis,E. J. Friebele +3 more
- Vol. 2191, pp 94-102
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TLDR
In this paper, the use of a wavelength division multiplexed fiber Bragg grating array for structural shape sensing and vibrational mode analysis is discussed, where the gratings are surface attached to a cantilever beam and demodulated by a scanning fiber Fabry Perot filter.Abstract:
Fiber Bragg gratings are of particular interest for distributed sensor applications such as embedded sensors for structural strain monitoring. This paper discusses the use of a wavelength division multiplexed fiber Bragg grating array for structural shape sensing and vibrational mode analysis. The gratings are surface attached to a cantilever beam and demodulated by a scanning fiber Fabry Perot filter to obtain strain information at different locations along the structure. A PC is used to read the strain information and perform static shape modeling of the beam.read more
Citations
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Patent
Robotic instrument systems and methods utilizing optical fiber sensors
TL;DR: In this article, Bragg sensor optical fibers are coupled to an elongated instrument body and include a fiber core having one or more Bragg gratings, and a controller is configured to initiate various actions in response thereto.
Book
Smart Structures and Materials
TL;DR: In this article, the authors introduce the concept of Smart Structures and Materials and present a scenario of the future of smart structures and their use in building and the future building scenarios.
Patent
Fiber optic position and shape sensing device and method relating thereto
Brooks A. Childers,Dawn K. Gifford,Roger G. Duncan,Matthew T. Raum,Michael E. Vercellino,Mark E. Froggatt +5 more
TL;DR: In this paper, the authors proposed a position and shape sensing device using an optical fiber means, which consists of either two single core optical fibers or a multicore optical fiber having at least two fiber cores.
Patent
Optical fiber shape sensing systems
TL;DR: In this paper, a controller is configured to determine a twist of at least a portion of the instrument body based on detected reflected light signals, which can be robotically or manually controlled.
References
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Journal ArticleDOI
Formation of Bragg gratings in optical fibers by a transverse holographic method
G. Meltz,W W Morey,W. H. Glenn +2 more
TL;DR: Bragg gratings have been produced in germanosilicate optical fibers by exposing the core, through the side of the cladding, to a coherent UV two-beam interference pattern with a wavelength selected to lie in the oxygen-vacancy defect band of germania, near 244 nm.
Journal ArticleDOI
Multiplexed fiber Bragg grating strain-sensor system with a fiber Fabry–Perot wavelength filter
TL;DR: The use of a fiber Fabry–Perot filter for detecting the wavelength shift of a Fiber Bragg grating sensor or network of sensor elements along a common fiber path is described.
Journal ArticleDOI
High-resolution fibre-grating based strain sensor with interferometric wavelength-shift detection
TL;DR: In this paper, an unbalanced-interferometer wavelength discriminator was used for the detection of dynamic strain induced wavelength shifts in fiber Bragg grating sensors, which is capable of sub-nanostrain resolution (0.6 ne/√(Hz) at 500 Hz).
Journal ArticleDOI
Fiber-optic Bragg grating strain sensor with drift-compensated high-resolution interferometric wavelength-shift detection
TL;DR: This system is shown to be capable of resolving sub-microstrain changes in the quasi-static strain applied to a grating and has a resolution of ~6 x 10(-3) microstrain/ radicalHz at a strain perturbation frequency of 1 Hz.
Book
Elasticity: Theory and Applications
Herbert Reismann,Peter S. Pawlik +1 more
TL;DR: In this paper, the Initially Stressed Solid-Elastic Instability (SELI) problem is considered. But the authors focus on the initial stress deformation and strain elasticity and its limits.