Design of Crack Detection System for Concrete Built Infrastructure Based on Fiber Optic Sensors
AIP Conference Proceedings(2018)
Abstract
This paper presents crack detection in concrete built infrastructure using fiber optic sensors based on the pressure measurement system. Fiber optic sensors in this experimental study were constructed using micro-bending techniques. The bends in optical fiber were evaluated based on pressures given by Compression Testing Machine (CTM). Pressure was performed on the surface of concrete specimens, in which there was a fiber optic in the middle of each specimen. Dimension of concrete specimen was 15 cm x 10 cm, with thickness variations of 2cm, 4cm and 6cm. The results showed that the higher the pressure value, the lower the intensity of signal light in optical fiber. It is mentioned as the attenuation of fiber optic. It depends on the thickness and the maximum strength of the specimen.
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Key words
crack detection system,crack detection,optic sensors,concrete
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