Innovative Fiber Optic Sensors for Pipeline Corrosion Monitoring

Corrosion, a leading cause of failure in metallic transmission pipelines, significantly affects the reliability and safety of metallic pipelines. To assess and monitor pipeline corrosion and provide substantial information to locate corrosion induced pipeline damage, this study proposes an optical fiber sensor based on long-period fiber gratings (LPFGs) for a corrosion-induced deterioration assessment of pipeline structures. A thin layer of nano iron/silica particles dispersed polyurethane is proposed to be coated on the outer surface of the LPFGs. With the thin metal dispersed layer over an LPFG, both its resonant wavelength and intensity of the resonant peak are altered. Accelerated laboratory corrosion tests are implemented to validate the feasibility of the proposed sensing system. Test results showed that within the detection limitation of the thin coated layer, the proposed sensor could monitor both the initial and stable corrosion rate consistently. With multiple LPFGs in a single fiber, it is possible to provide a cost-effective corrosion-monitoring technique for pipeline corrosion monitoring.

Language

  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 1502-1511
  • Monograph Title: Pipelines 2014: From Underground to the Forefront of Innovation and Sustainability

Subject/Index Terms

Filing Info

  • Accession Number: 01536334
  • Record Type: Publication
  • ISBN: 9780784413692
  • Files: TRIS, ASCE
  • Created Date: Aug 4 2014 3:02PM