Experimental study of embedded fiber optic strain gages in concrete structures

Sami F. Masri; M. Mustafa; Marten J. de Vries; Richard O. Claus

doi:10.1117/12.148000

12 July 1993 Experimental study of embedded fiber optic strain gages in concrete structures

Sami F. Masri, M. Mustafa, Marten J. de Vries, Richard O. Claus

Proceedings Volume 1918, Smart Structures and Materials 1993: Smart Sensing, Processing, and Instrumentation; (1993) https://doi.org/10.1117/12.148000
Event: 1993 North American Conference on Smart Structures and Materials, 1993, Albuquerque, NM, United States

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.

Citation Download Citation

Sami F. Masri, M. Mustafa, Marten J. de Vries, and Richard O. Claus "Experimental study of embedded fiber optic strain gages in concrete structures", Proc. SPIE 1918, Smart Structures and Materials 1993: Smart Sensing, Processing, and Instrumentation, (12 July 1993); https://doi.org/10.1117/12.148000

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