3208 長ゲージFBGによる応力分布計測(J06-2 計測・モニタリングI,J06 知的材料・構造システム)

概要

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We reported the applicability of the distributed sensing system based on optical frequency domain reflectometry (OFDR) to structural health monitoring. We could principally obtain strain or temperature distribution along an optical fiber with the spatial resolution of less than several mm by using the system. In this study, we implemented experiments to measure the strain distributions on the open hole specimen to monitor stress concentration, and we also analyzed the response distance using finite element method (FEM) to investigate the limitation on the spatial resolution under the influences of physical characteristics of coating materials and adhesives. Then it is demonstrated that the current system has the high spatial resolution.
社団法人日本機械学会の論文
2006-09-15