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Proceedings Paper

Multiplexed Bragg grating laser sensors for civil engineering
Author(s): Raymond M. Measures; A. Tino Alavie; Robert Maaskant; Myo Myint Ohn; Shawn E. Karr; Shang Yuan Huang; Derek J. Glennie; C. Wade; A. Guha-Thakurta; Gamil Tadros; Sami Rizkalla
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Paper Abstract

A portable, rugged, and compact 4-channel Bragg grating fiber laser sensor demodulation system was developed for interrogating an array of 20-intracore Bragg grating sensors that we embedded within several of the concrete girders used to support the deck of a new two span road in Calgary, Alberta. Another unique feature of this bridge is that two types of Carbon fiber based composite prestressing tendons are being tested in a number of the concrete girders. We have instrumented five of the approximately 60 ft long concrete girders with fiber optic Bragg grating strain and temperature sensors in order to monitor the loads on these girders and their response during the construction of the bridge and subsequently over an extended period of time.

Paper Details

Date Published: 30 December 1993
PDF: 9 pages
Proc. SPIE 2071, Distributed and Multiplexed Fiber Optic Sensors III, (30 December 1993); doi: 10.1117/12.165922
Show Author Affiliations
Raymond M. Measures, Univ. of Toronto (Canada)
A. Tino Alavie, Univ. of Toronto (Canada)
Robert Maaskant, Univ. of Toronto (Canada)
Myo Myint Ohn, Univ. of Toronto (Canada)
Shawn E. Karr, Univ. of Toronto (Canada)
Shang Yuan Huang, Univ. of Toronto (Canada)
Derek J. Glennie, Univ. of Toronto (Canada)
C. Wade, City of Calgary (Canada)
A. Guha-Thakurta, City of Calgary (Canada)
Gamil Tadros, Straight Crossing Inc. (Canada)
Sami Rizkalla, Univ. of Manitoba (Canada)

Published in SPIE Proceedings Vol. 2071:
Distributed and Multiplexed Fiber Optic Sensors III
Alan D. Kersey; John P. Dakin, Editor(s)

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