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Title:Theory and experiments on optical fiber strain sensors embedded in concrete
Author(s):Calero, Javier
Doctoral Committee Chair(s):Gamble, William L.
Department / Program:Civil and Environmental Engineering
Discipline:Civil Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Civil
Engineering, Electronics and Electrical
Physics, Optics
Abstract:This thesis reports on theory and experiments on optical fibers embedded in concrete structures for the development of a polarimetric strain sensor. The objective is to study the feasibility of such a sensor and to identify the important issues in the design of the sensor system as well as its limitations. The two most important contributions of the theoretical analysis are the description of the micromechanics involved in measuring ambient strain from within a body using an embedded fiber sensor and the strain effects on the anisotropic birefringent properties of the optical fiber. The transmitted optical signal of the sensory system is theoretically studied, tested with different specimens and correlated with experimental work with good agreement. Throughout the experimental work much experience was gained on how to embed fibers in concrete and set up the system. This thesis provides guidelines and recommendations on the design of embedded fiber sensors in concrete structures. The detection of stress waves within concrete with the embedded polarimetric fiber sensing system is also demonstrated.
Issue Date:1995
Rights Information:Copyright 1995 Calero, Javier
Date Available in IDEALS:2011-05-07
Identifier in Online Catalog:AAI9522084
OCLC Identifier:(UMI)AAI9522084

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