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Laboratory Testing of FBGs for Pipeline Monitoring.

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  • 1Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.

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Fiber Bragg gratings (FBGs) effectively monitor pipeline buckling from geohazards. This study validates FBG reliability, including thermal strain effects, for enhanced pipeline safety.

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Area of Science:

  • Geotechnical Engineering
  • Materials Science
  • Structural Health Monitoring

Background:

  • Optical Fiber Bragg Gratings (FBGs) offer a promising technology for monitoring geohazard impacts on pipelines due to their sensitivity to strain and bending.
  • Traditional methods often lack the precision needed to detect subtle deformations caused by events like pipeline buckling.
  • This research explores the integration of FBGs for detecting pipeline upheaval buckling, a critical failure mode.

Discussion:

  • Investigates the reliability of FBG monitoring through theoretical analysis of pipeline buckling models and laboratory experiments.
  • Focuses on the under-explored impact of thermal strain on both pipeline integrity and FBG performance.
  • Compares analytical models with experimental data to validate the FBG approach for geohazard detection.

Key Insights:

  • FBGs demonstrate reliable performance in detecting pipeline buckling, even under thermal loading conditions.
  • The study highlights the potential of FBGs to provide early warnings for geohazard-induced pipeline damage.
  • Thermal strain significantly influences FBG readings and pipeline behavior, necessitating careful consideration in monitoring strategies.

Outlook:

  • Further research should address FBG gage slipping and develop advanced methods for quasi-distributed strain measurements.
  • Optimizing FBG installation and data analysis techniques will enhance their practical application in real-world pipeline monitoring.
  • This technology holds potential for improving the safety and longevity of critical pipeline infrastructure globally.