삼각형 모양의 광섬유 굽힘 센서의 접착 방식에 따른 전단 변형 전달율의 FEM 분석

In this study, the strain transfer rate of a triangular fiber bending sensor attached to a structure was analyzed. The triangular bending sensor is insufficient for strain transmission when attached to a structure because of the characteristics of the stacked structure, so research on strain transmission are needed. This paper shows that the strain transmission rate of the optical fiber by shear force could be identified when a load was applied to a structure to which a triangular fiber bending sensor had been attached. The type of adhesive used to adhere the optical fibers to the structure and the adhesion method were set as variables, and the strain transfer rate was derived through finite element analysis. As a result, it was verified that the strain transfer rate increased as the coating area increased in the case of the adhesion method; the strain transfer rate was higher when applied using a 5-minute hardening epoxy with higher rigidity characteristics in the case of the adhesive type.