

Author: Reibold R. Molkenstruck W. Swamy K. M.
Publisher: S. Hirzel Verlag
ISSN: 1610-1928
Source: Acta Acustica united with Acustica, Vol.43, Iss.4, 1979-11, pp. : 253-259
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Abstract
In this experimental research the integrated optical effect produced by ultrasonic fields from circular and square transducers is studied by using the light diffraction technique. The measured axial sound field structure of the Raman-Nath parameter is compared with the results of a theoretical investigation by Ingenito and Cook [3].It could be shown that suitable conditions provided a close correspondence between the predicted shape of the Raman-Nath parameter and the observed axial profile was verified. An accurate adjustment to thickness resonance frequency for air-backed transducers of the use of heavily mechanically loaded transducers as well as the knowledge of the effective transducer dimensions were required as basic conditions.The results obtained render possible the application of the one-dimensional approach to transducer calibrations and related problems and a decrease of the measuring uncertainty of the acousto-optical techniques.
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