High Efficiency Transducer for Transmission to Air

descriptionPublicationkeyboard_double_arrow_right Article 01 Nov 1959 English Publisher:Acoustical Society of America (ASA)Journal:The Journal of the Acoustical Society of America, volume 31, pages 1,570-1,570 (issn: 0001-4966, eissn: 1520-8524,

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Authors: J. Kritz;

doi: 10.1121/1.1930262 , 10.1109/t-pgue.1961.29274

High Efficiency Transducer for Transmission to Air

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Abstract

The basic problems of transduction to low acoustic impedance media are considered. The advantages offered by flexure mode vibration of driving elements are shown. Selection of a driving element consisting of a free disk supported at the nodal circle is made. Fabrication in quartz and ceramic is described. Test results on transducers in the range 5 to 200 kc is given with transducer efficiencies of better than 90% obtained. Transducer mounting in parabolic reflectors and the resultant beam patterns are shown.

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