光ファイバひずみ・振動測定機能一体化センサの開発

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概要

• 論文の詳細を見る

• A fiber optic strain and vibration sensors (FOSVS) has been newly developed for application to health monitoring of structures. FOSVS is a fiber optic gap sensor and composed of two multimode cantilever and reflector fibers, a broad-band light, two photo detectors and a FBG filter. Reflected interference signal from the sensor was used for measuring axial displacement of the cantilever fiber, which is converted to strain. On the other hand, transmitted light power through the reflector fiber, which is converted deflection of the cantilever fiber, was used to measure transverse acceleration applied to the sensor. From the experimental and theoretical results, it appeared that the sensor could measure the axial strain and the transverse acceleration correctly. Furthermore it has been proven that the sensor characteristic is predictable by simple elastic beam theory. From the present results, it can be concluded that the FOSVS sensor has practical capability of simultaneous measurement of strain and vibration

著者

• 高坂 達郎

  Kochi Univ. of Tech. Dept. of Mechanical Engineering

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• 光ファイバひずみ・振動測定機能一体化センサの開発

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