SmartPatch

SmartPatch is a robust and easy to handle FBG strain and temperature sensor that can be temporarily or permanently attached to most substrate materials. It can be applied singly or in multiple SmartPatch arrays of single strain sensors, combined strain and temperature sensors and rosette constructions. A short gauge length (SGL) is the standard construction, and a long gauge length (LGL) option is available for surface strain measurement of inhomogeneous materials.

Features:
  • FBG strain and/or temperature sensor
  • Sensor embedded within protective laminate
  • Zero power, EMI immune, intrinsically safe
  • Developed by Smart Fibres for surface bonding to metal, concrete, composite etc
  • Installations include wind turbine, ship hulls, yacht masts and concrete civil structures
  • Suitable for long-term SHM
  • Multiple km signal integrity

Related FAQs

FAQ. What is the warranty period for Smart Fibres equipment?

All of our fibre optic sensors come with a standard one year warranty. This warranty can be increased on a year by year basis. Extended warranty is available at the time of initial purchase on request.

FAQ. How do I calculate which wavelength to use for my FBGs to maximise the number of sensors on a particular channel?

Smart Fibres has created a wavelength budget calculation tool for FBG wavelength selection.

Please Email Us or call +44 1344 484111 with details of your application and we can help you create a wavelength budget.

FAQ. How do I compensate for the thermal effect on the strain measuring FBG?

We recommend that a second FBG, which is completely isolated from strain, is fitted close to the strain measuring FBG. Temperature compensation can be achieved in 2 methods, loose FBG or a strain isolated coupon with a known CTE. Our SmartSoft software includes a utility to automate this temperature compensation process.

FAQ. What fibre type is used in your systems?

Single mode fibre with a 9 µm core, 125 µm cladding, and a 155 µm Polyimide or 245 µm Acrylate coating. Optical Fibers with pure silica core, bend tolerant and small core e.g. 6/125 or 4/125, can also be used but with some optical power losses. Multi mode fibre cannot be used.

FAQ. Can we put different sensor types on the same fibre?

Yes, Smart Fibres’ WDM products allow the user to combine different sensors types, e.g. temperature, strain and vibration all on a single fibre.

FAQ. Do you have a procedure for mounting FBG sensors onto a substrate?

Yes, please send your request to tech.support@smartfibres.com.