1317 フレキシブルマトリックスセンサを用いたCFRP積層板多点成形モニタリング(J14-4 知的材料・構造システム(4) 計測・モニタリングIII,ジョイントセッション,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

概要

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Since CFRP structure becomes complicated due to adoption of integral molding, local molding faults such as under cure are liable to occur. For solving this problem, it is demanded to measure the distribution of cure-degree of whole composite structure. In the present study, we propose a patch-type flexible matrix sensor based on permittivity measurements. Multiple electrodes and wirings are readily fabricated at one time using a photolithographic process. Moreover, the sensor has only m+n wirings for m×n sensors, and is thereby suitable for the multipoint measurements. We also constructed the method of estimating degree of cure considering the effect of frequency dependence of permittivity of resin and viscosity variation due to temperature change. Experiment of multipoint cure monitoring are carried out using a CFRP plate. As a result, we confirmed the effectiveness of this method by comparing with the conventional differential scanning calorimeter.
社団法人日本機械学会の論文
2008-08-02