Nickel plating of FBG strain sensors for nuclear applications

M. Perry, P. Niewczas, Michael Johnston, J. Mackersie

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

1 Citation (Scopus)

Abstract

We present a method for plating FBG strain sensors with a strongly-bonded, hermetic nickel layer, without exposure of the fiber to corrosive environments. A 1 mu m thick, highly adhesive chrome layer is deposited onto bare fibers via evaporation. Addition of an inert and electrically conductive gold layer then allows the fiber to be electroplated with a 50-100 mu m nickel layer. Finite element models have confirmed that nickel plated FBG sensors can be brazed into steel structures and used to monitor local strain and temperature. Embedding gratings that are temperature and radiation resistant will be particularly applicable to the structural health monitoring of steel prestressing tendons used in the concrete containments of nuclear power plants and other safety-significant structures.
Original languageEnglish
Title of host publication21st International Conference on Optical Fiber Sensors
EditorsW.J. Bock, J. Albert, X. Bao
Place of PublicationBellingham
DOIs
Publication statusPublished - 2011
Event21st International Conference on Optical Fiber Sensors - Ottawa, Canada
Duration: 15 May 201119 May 2011

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume7753
ISSN (Print)0277-786X

Conference

Conference21st International Conference on Optical Fiber Sensors
CountryCanada
CityOttawa
Period15/05/1119/05/11

Keywords

  • metal coated fiber
  • corrosion
  • optical-fiber
  • optimization
  • chemical-composition gratings
  • fabrication
  • prestress loss
  • fiber Bragg gratings
  • concrete containments
  • structural health monitoring
  • nickel plating
  • fbg strain sensors
  • nuclear applications

Cite this