11804 ファイバドップラーセンサを用いた複合材料パネルの衝撃モニタリング(モニタリング・設計工学,一般講演,学術講演)

概要

論文の詳細を見る
When CFRP receives the impact outside respect, the internal damage that is called flake off between layers is caused. As for the damage, the discovery is difficult in watching. Therefore, the damage diagnosis that uses X rays and the supersonic wave is being done now. However, a scan range is small and takes labor in those diagnostic methods very much Therefore, the development of diagnostics with a sensor that can diagnose the range of the scanning widely, and in real time is demanded. Then, it is a Fiber-optic Doppler sensor (FOD sensor) now to attract attention. In this study, the impact is identified by analyzing the spread signal of the impact given to the structure. The sum of two or more sensor outputs is output in the measurement with FOD sensor. Therefore, it is necessary to obtain an accurate impact load by analyzing the output shape of waves. It experiments in this study with the same acceleration sensor as the FOD sensor to output to conduct the experiment that imitates the FOD sensor. The entire output equal with the output of the FOD sensor is obtained by adding and matching the output of two or more acceleration sensors in the acceleration sensor. A continuous wavelet transform is used for the analysis of the output wave form.
社団法人日本機械学会の論文
2008-03-13