FBG FBG STRAIN SENSOR FOR CURVED SURFACES

摘要

The present invention relates to an FBG strain sensor for measuring strain on a curved surface, wherein the fibers (4) are fixed between two fixing members (5a, 5b), the lower surfaces of these fixing members are formed as bonding surfaces, The optical fiber 4 and the fixing members 5a and 5b are embedded in a protective composite 6 made of soft silicone rubber or plastic having comparable mechanical properties and the fiber 4 is frictionally low enough to be comparable to Teflon or Teflon The lower slide film 7 made of plastic having a coefficient and the lower thin film 8 or the slide tube 9 and the lower surface of the lower slide film 7 or the slide tube 9, The outer surface line of the lower portion of the fixing member 5a, 5b is located in the plane including the bonding surfaces of the fixing members 5a, 5b.