1707 光ファイバ振動センサの周波数応答評価(J08-2 光ファイバセンサとその応用,J08 知的材料・構造システム)

概要

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A new optical fiber sensor using 'Doppler effect in flexible and expandable light-wave guide' can detect the sum of principle strain rate, which make possible the comparison of the experimental results with numerical simulations, with very wide frequency range. The object of this study was to evaluate the frequency response of the sensor. The sensor was applied to detect elastic wave generated by the longitudinal impact of a steel ball in a long cylindrical steel rod. And the simulation of elastic wave propagation was carried out under a mechanical load calculated by using the Herzian impact assumptions. It was found that the sensor has flat gain from 13kHz to 73kHz by the comparison of these results.
社団法人日本機械学会の論文
2005-09-18