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Optica Publishing Group
  • 2017 Conference on Lasers and Electro-Optics Pacific Rim
  • (Optica Publishing Group, 2017),
  • paper s1100

Fiber Bragg grating sensors for real-time monitoring of boiler U-bend tubes thinning

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Abstract

In this paper, various types of nondestructive inspection techniques have been discussed. We also experimentally investigate the usage of optical sensors as a non-destructive approach towards tube boiler inspection. The experiment has been carried out onto a carbon steel U-tube with sensors being installed at critical positions of the tubes. It was observed that different thicknesses along the curved section of the U- tube could be distinguished at room temperature after processing the sensed signal which gives an idea of monitoring the thinning of the u-tubes. This technology is supposed to have an upper edge over existing NDT/NDI technologies regarding its form-factor, detection speed and accuracy, cost-effectiveness, and tube diameter requirement.

© 2017 Optical Society of America

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