i-manager Publications

Plastic Optic Fiber (POF) Based Phase Difference Measurement Method For Estimation Of Crack Mouth Opening Displacement (CMOD) In Concrete

K. Samrajyam*, B. Sobha**, T. D. Gunneswara Rao***, R.L.N. Sai Prasad****

* Research Scholar, Department of Physics, National Institute of Technology, Warangal, India.

** Associate Professor, Department of Physics, National Institute of Technology, Warangal, India.

*** Associate Professor, Department of Civil Engineering, National Institute of Technology, Warangal, India.

**** Professor, Department of Physics, National Institute of Technology, Warangal, India.

Periodicity:March - May'2014
DOI : https://doi.org/10.26634/jce.4.2.2985

Abstract

Crack detection and measurement of crack width in concrete are important for structural health monitoring of structures. In this paper, we report on a technique for estimation of crack mouth opening displacement ((CMOD) in concrete specimens of M20 composition. It is based on the principle of using Plastic Optical Fiber(POF) based strain displacement sensor employing phase difference measurement technique. The motivation for the method has been to improve on the sensitivity of detection of crack width measurement and propagation by looking at the phase changes rather than amplitude changes as attempted earlier by the authors.

Keywords

Concrete, Crack Mouth Opening Displacement (CMOD), Three Point Bend Test, Plastic Optical Fiber, Phase Difference, LAB View, LVDT.

How to Cite this Article?

Samrajyam.K., Sobha.B., Rao,G.T.D., and Prasad,S.R.L.N. (2014). Plastic Optic Fiber (POF) Based Phase Difference Measurement Method For Estimation Of Crack Mouth Opening Displacement (CMOD) In Concrete. i-manager’s Journal on Civil Engineering, 4(2), 13-19. https://doi.org/10.26634/jce.4.2.2985

References

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Plastic Optic Fiber (POF) Based Phase Difference Measurement Method For Estimation Of Crack Mouth Opening Displacement (CMOD) In Concrete

Abstract

Keywords

How to Cite this Article?

References

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