Evaluation and Minimization of Experimental Errors in Elastic Constants and Internal Friction Obtained by the Composite-Bar Method

1 January 1989

journal article
Published by IOP Publishing in Japanese Journal of Applied Physics

Vol. 28 (S2)
https://doi.org/10.7567/jjaps.28s2.184

Abstract

Using the composite-bar method, the fundamental frequency f _s and internal friction Q ^-1 of a sample were measured as a function of the fundamental frequency f _q of the quartz vibrator by using quartz vibrators with different fundamental frequencies. The experimental values of f _s and Q ^-1 varied with f _q and were maximum and minimum respectively at f _q=f _s. The f _s and Q ^-1 values at f _q=f _s are the most probable values, and they were determined by interpolation of the data. The errors were 0.05 to 0.10% (practically negligible) in f _s and 20 to 300% in Q ^-1, when the difference between f _q and the most probable f _s was 10%.

Keywords

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