Jpn. J. Appl. Phys. 24 (1985) Supplement 24-1 pp. 34-36  |Previous Article| |Next Article|  |Table of Contents|
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5th Symp. Ultrasonic Electronics, Tokyo, 1984

Application of Ultrasonic Spectroscopy to Polymers and Liquid Crystal

Kazumi Matsushige, Hirotaka Okabe, Shiro Shichijyo and Tetuo Takemura

(Received November 27, 1984)

A new measuring system for ultrasonic spectroscopy was constructed, utilizing piezoelectric polymer films as wide-band transducers. By conducting FFT analysis on the ultrasonic pulses transmitted through specimens, the frequency spectra of attenuation over a wide range of about 1 to 10 MHz could be obtained simultaneously. In a test of its performance, this measuring system was successfully applied to nondestructive testing in various polymers and a study of the nematic-isotropic phase transition in liquid crystal MBBA.

URL: http://jjap.jsap.jp/link?JJAPS/24S1/34/