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Proceedings Paper

Experimental study of embedded fiber optic strain gages in concrete structures
Author(s): Sami F. Masri; M. Mustafa; Marten J. de Vries; Richard O. Claus
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Paper Abstract

This paper reports the use of short gauge length optical fiber sensors for the quantitative measurement of strain in reinforced concrete and the direct comparison between the performance of these sensors and co-located foil strain gauges. Pairs of fiber sensor elements and reference foil gauges were mounted to specific rebar elements which together form the three-dimensional reinforcement cage in a cement cross-beam specimen. The geometry of the specimen sections, approximately 20 cm square and 2.5 meters along each axis, is intended to model typical construction of post and beam-reinforced concrete structures. The results of this work are that (1) the robust fiber sensors survived the embedding process, (2) their calibrated output signals accurately match with those of co-located reference foil strain gauges, (3) they may be used to extract quantitative strain information from a complicated reinforced concrete specimen, and (4) they may be used to monitor crack progression.

Paper Details

Date Published: 12 July 1993
PDF: 7 pages
Proc. SPIE 1918, Smart Structures and Materials 1993: Smart Sensing, Processing, and Instrumentation, (12 July 1993); doi: 10.1117/12.148000
Show Author Affiliations
Sami F. Masri, Univ. of Southern California (United States)
M. Mustafa, Univ. of Southern California (United States)
Marten J. de Vries, Virginia Polytechnic Institute and State Univ. (United States)
Richard O. Claus, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 1918:
Smart Structures and Materials 1993: Smart Sensing, Processing, and Instrumentation
Richard O. Claus, Editor(s)

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