Detection of Buckling in Columnar Structures by Shape Sensing with Multi-Core Optical Fibers

Abstract

This paper presents the results of a demonstration experiment in which helical multi-core optical fiber shape sensing was applied to detect the buckling deformation of a columnar structure, one of the most basic structures, while preventing fiber breakage. The experimental results show that the buckling deformation of a rod can be detected even when only a part of the fiber is fixed to the measurement target, suggesting its applicability to structural health monitoring of columnar structures.