Determination of Absolute Sound Levels and Acoustic Absorption Coefficients by Thermocouple Probes--Experiment
نویسنده
چکیده
A stable, readily constructable thermocouple probe has been developed for determining absolute sound levels in ultrasonic fields in liquid media. This paper includes criteria for design of such probes •nd a discussion of experimental measurements made with such a device. It is a consequence of the method that if the sound intensity at an appropriate size thermocouple junction imbedded in an absorbing medium is known the scousfic absorption coefficient of the material • be determined. The method thus makes possible the determination of absorption coefficients of minute quantities of material.
منابع مشابه
Determination of Absolute Sound Levels and Acoustic Absorption Coefficients by Thermocouple Probes--Theory
A detailed theoretical analysis of the operation of thermocouple probes used to determine absolute sound levels or acoustic absorption coefficients is presented. The probe consists of a thermocouple imbedded in a sound absorbing medium which closely matches in density and sound velocity the medium in which the sound level is to be determined. In use the transducer which generates the acoustic f...
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