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An Embeddable Strain Sensor with 30 Nano-Strain Resolution Based on Optical Interferometry
Article

A Uniform Strain Transfer Scheme for Accurate Distributed Optical Fiber Strain Measurements in Civil Structures

1
Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USA
2
American Inventor Institute, Willow Spring, IL 60480, USA
*
Author to whom correspondence should be addressed.
Inventions 2018, 3(2), 30; https://doi.org/10.3390/inventions3020030
Received: 4 March 2018 / Revised: 14 May 2018 / Accepted: 16 May 2018 / Published: 20 May 2018
(This article belongs to the Special Issue Structural Health Monitoring and Their Applications Across Industry)
We report a screw-like package design for an embeddable distributed optical fiber strain sensor for civil engineering applications. The screw-like structure is the exterior support for an optical fiber sensor. The bare optical fiber is embedded and secured in a longitudinal groove of the screw-like package using a rigid adhesive. Our packaging scheme prevents damage to the bare optical fiber and ensures that the packaged sensor is accurately and optimally sensing strain fields in civil structures. Moreover, our screw-like design has an equal area in a cross-section perpendicular to and along the screw axis, so strain field distributions are metered faithfully along the length of the embedded optical fiber. Our novel screw-like package optical fiber sensor, interfaced to a Rayleigh scattering-based optical frequency domain reflectometer system enables undistorted, accurate, robust, and spatially-distributed strain measurements in bridges, tunnels, pipelines, buildings, etc. along structural dimensions extending from centimeters to kilometers. View Full-Text
Keywords: screw-like structure; strain transfer; distributed; strain measurements; fiber optics screw-like structure; strain transfer; distributed; strain measurements; fiber optics
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MDPI and ACS Style

Du, Y.; Chen, Y.; Zhuang, Y.; Zhu, C.; Gerald, R.E., II; Huang, J. A Uniform Strain Transfer Scheme for Accurate Distributed Optical Fiber Strain Measurements in Civil Structures. Inventions 2018, 3, 30. https://doi.org/10.3390/inventions3020030

AMA Style

Du Y, Chen Y, Zhuang Y, Zhu C, Gerald RE II, Huang J. A Uniform Strain Transfer Scheme for Accurate Distributed Optical Fiber Strain Measurements in Civil Structures. Inventions. 2018; 3(2):30. https://doi.org/10.3390/inventions3020030

Chicago/Turabian Style

Du, Yang, Yizheng Chen, Yiyang Zhuang, Chen Zhu, Rex E. Gerald II, and Jie Huang. 2018. "A Uniform Strain Transfer Scheme for Accurate Distributed Optical Fiber Strain Measurements in Civil Structures" Inventions 3, no. 2: 30. https://doi.org/10.3390/inventions3020030

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