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An automatic system for measuring elastic constants and internal friction on glasses and ceramics as a function of temperature was constructed by employing the concept of the cube resonance method. The system consists of a mini-computer, a frequency synthesizer, a transducer, a digital voltmeter and a plotter, all of which are connected with bas line. It can send a receiver any signal from 100Hz to 20MHz with a resolution of 1mHz. The measuring was made on several cube and a parallel piped on-shaped specimens of 1∼5mm size, and the resultant spectra for silica glass were analyzed by a newly made computer program to obtain elastic constants and internal friction. The results agreed well with those given in a literature, independent of specimen size. An internal friction for silica glass was varied as a function of water content.
日本熱測定学会の論文