Nondestructive Testing and Health Monitoring Techniques for Structural Effective Prestress
Figure 2
Encapsulations of FBG sensors. (a) FBG sensor was fixed on the strand surface using glue and Teflon tape [45]. (b) The adhesive-bonded FBGs seats-steel wires structure [56]. (c) FBG sensor was embedded into the FRP bar in a smart steel strand [51].