An Improved Apparatus of the Resonance Reverberation Method for Ultrasonic Measurement in Liquids from 10 kHz to 700 kHz

Autor:	Hideto Shintani, Reinosuke Hayakawa, Yasaku Wada
Rok vydání:	1974
Předmět:	Reverberation Physics and Astronomy (miscellaneous) Chemistry Acoustics General Engineering Analytical chemistry General Physics and Astronomy Acoustic energy Resonance Attenuation coefficient Speed of sound Ultrasonic sensor Sensitivity (electronics) Electronic circuit
Zdroj:	Japanese Journal of Applied Physics. 13:787-792
ISSN:	1347-4065 0021-4922
DOI:	10.1143/jjap.13.787
Popis:	As a continuation of a previous paper [Japan. J. appl. Phys. 6 (1967) 1351], this paper describes an improved apparatus for measuring the absorption coefficient and velocity of sound in liquids at frequencies from 10 kHz to 700 kHz. The principle of the method consists of measuring the resonance frequency fR and decay-rate D of acoustic energy in a spherical vessel filled with a liquid. The velocity and absorption coefficient of a test liquid are evaluated by comparing fR and D between the test liquid and the reference liquid of a known velocity and absorption coefficient. The electronic circuits have been considerably improved compared to the previous apparatus and as a result, the stability, sensitivity, and ease of operation of the apparatus have been increased. Data for MgSO4 solutions are presented as examples.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::74da86ec3fe0cfb9410a7bcc5d515ca1 https://doi.org/10.1143/jjap.13.787 Zobrazit plný text záznamu