Fatigue-loaded fiber optic strain gauges performance in reinforced concrete structures

Marten J. de Vries; Manish H. Nasta; Richard O. Claus; Sami F. Masri

doi:10.1117/12.166870

7 February 1994 Fatigue-loaded fiber optic strain gauges performance in reinforced concrete structures

Marten J. de Vries, Manish H. Nasta, Richard O. Claus, Sami F. Masri

Proceedings Volume 2072, Fiber Optic Physical Sensors in Manufacturing and Transportation; (1994) https://doi.org/10.1117/12.166870
Event: Optical Tools for Manufacturing and Advanced Automation, 1993, Boston, MA, United States

Abstract

This paper reports the performance of short gage length optical fiber sensors embedded in a reinforced concrete specimen for the quantitative measurement of periodic strain. We report the use of practical, short gage length relative and absolute strain sensors for the measurement of strain in a reinforced concrete specimen. Both types of fiber sensors were attached to steel reinforcement rods prior to filling with concrete, and were collocated with conventional foil strain gages to allow direct comparison of output signals. The relative fiber sensors were of the extrinsic Fabry-Perot interferometric type operating at a wavelength of 1300 nm and the absolute strain sensors used wavelength information to measure absolute strain. The results of this work show that such optical fiber elements may be considered for long term quantitative evaluation of civil structure components.

Citation Download Citation

Marten J. de Vries, Manish H. Nasta, Richard O. Claus, and Sami F. Masri "Fatigue-loaded fiber optic strain gauges performance in reinforced concrete structures", Proc. SPIE 2072, Fiber Optic Physical Sensors in Manufacturing and Transportation, (7 February 1994); https://doi.org/10.1117/12.166870

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