Design and fabrication of a reinforced concrete beam for evaluating fibre optic strain/temperature sensing
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Date
1995
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University of New Brunswick
Abstract
Fibre optic smart structures are load bearing entities that have an integrated optical
sensing system that is used to evaluate stress or strain levels in the structure. This report is
intended to give a engineering perspective of the physics involved in this system as well as
providing a practical design for a tlexural test member to evaluate these techniques.
Research in UNB's Physics department has produced a linear fibre sensor that is
potentially capable of measuring strain at any point along its length. If this "distributed" sensor
can be usefully implemented in conjunction with normal reinforced concrete design, the science
of structural monitoring will be greatly enhanced.
The reinforced concrete member produced as a result of this work has a three part
continuous strain/temperature sensor that should be able to give good indications of the
functionality of this new system for measuring compressive and tensile strains as well as
temperature over a given length.