Experimental Study on Measuring the Steel Stress via FBG Sensors

Hong Wei Lin; Yu Xi Zhao

doi:10.4028/www.scientific.net/AMM.548-549.663

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 548-549Experimental Study on Measuring the Steel Stress...

Experimental Study on Measuring the Steel Stress via FBG Sensors

Abstract:

Studying the bond stress-slip relationship between concrete and corroded steel bar by cutting the steel bars into two separate parts and attaching electric strain gauges in the slots is no longer suitable. To overcome the disadvantages of electric strain gauges in the measuring the stress of corroded steel bars, this paper introduced a new kind of FBG sensor measuring steel stress. By calibration tests, the proportion coefficient between variation of wavelength and steel strain was confirmed as 0.0012. The bond behavior between concrete and steel bar was also investigated by performing pullout tests on beam end specimens.

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Periodical:

Applied Mechanics and Materials (Volumes 548-549)

Pages:

663-667

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.548-549.663

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Online since:

April 2014

Authors:

Hong Wei Lin, Yu Xi Zhao*

Keywords:

Concrete Bond, FBG Sensor, Steel Stress

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* - Corresponding Author

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