| Title |
Self Sensing Reinforcement Combined with Fiber-Optic Sensor and FRP Strip for Structural Reinforcement |
| Authors |
Song, Se-Gi ; Seo, Soo-Yeon ; Kim, Kang Su |
| DOI |
https://doi.org/10.5659/JAIK_SC.2019.35.8.123 |
| Keywords |
FRP Strip; Fiber Bragg Grating Sensor; Epoxy; Reinforcement; Connection method; Adhesion length |
| Abstract |
Recently, it is required to develop a monitoring technology that combines an FBG sensor as a means for continuously monitoring whether
reinforcing effect of FRP is maintained on FRP reinforced structural members. However, most existing researches focus on the insertion of
FBG sensors into bar-shaped FRPs, and there is insufficient study on the details strip-type FRPs combined with FBG sensors. Therefore, in
this paper, it is studied to develop a reinforcement in which a FBG sensor is combined with a FRP strip. Especially, combination of FRP
and FBG sensor. For this, a series of experiments were performed to find the adhesive strength of fiber-FRP-epoxy joints, the tensile strength
of FBG sensor part with reflection-lattice, and the performance depending on the connection method of FRF and FBG sensor. As a result of
the study, it was found that a minimum strength of 216.15 N/mm2 is required for incorporating FBG sensors in FRP using epoxy. It is
considered that the adhesion length of epoxy joints should be more than 50mm. When the FBG sensor is attached to the FRP strip as an
epoxy, it is considered appropriate to use the complete attachment and the sensor non-attachment method. |