複合振動子法によるセラミックスの弾性率測定(第1報) : 簡易化と高精度化

概要

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The piezoelectric composite-bar method was applied to elastic modulus measurement of ceramics (zirconia, alumina, silicon nitride and silicon carbide). The procedure of measurement was simplified by using quartz vibrators with various resonant frequencies and grease as the adhesive. The resonant frequency f_s of the specimen; was observed to depend on the resonant frequency f_q of the vibrator. The value of f_s was maximum at f_s =f_q. The most probable value of f_s (f_<sθ>) is obtained at f_s = f_q, and was determined by plotting f_s against f_q. The experimental error in: f_s was evaluated by the plot of f_s vs. f_q (f_s/f_<sθ> vs. f_q/f_<sθ>) and was smaller than 0.1% , when the difference between f_q and f_<sθ> was 10%. The value of Q^<-l> was observed to be minimum at f_q/f _<sθ>=1.
社団法人日本セラミックス協会の論文
1990-07-01