Research Article

Fiber-Reinforced Polymer-Packaged Optical Fiber Bragg Grating Strain Sensors for Infrastructures under Harsh Environment

Table 2

The testing results at low cycle fatigue.

SpecimenStrain amplitude (με)Cycles
(10000 times)
Wavelength variation (nm)

Surface welding GFRP (1)2000~30001007
Surface welding GFRP (2)2000~30001009
Surface welding GFRP (2)2000~40001606
Direct embedded CFRP2000~30001007