10.14489/td.2016.05.pp.026-030

2016, 05 May

DOI: 10.14489/td.2016.05.pp.026-030

Konovalov N.N., Rafikov R.H., Preobrazhensky M.N.
THE DIRECTIONS PATTERN OF THE PIEZOELECTRIC TRANSDUCERS IN AN ADDITIONAL PLANE
(pp. 26-30)

Abstract. The work carried out experimental measurements of the direction patterns in the additional plane for the transducers with angles of input from 34 to 58 and the piezoelectric plates of various shapes. Measurements were made using a sample with a vertical hole. The movement of the transducer on the contact surface was carried out so that the beam exit point moved in a circle and in a simpler way – by moving in a straight line perpendicular to the acoustic axis. The direction patterns measured in two ways for converters with input angles 40°, 45° and 50° are almost identical and the error associated with the change of the input angle can be neglected. It is received that the considerable expansion of an angle of disclosure of the directional pattern is observed for transducers with prism angles close to the first critical. The opening angle decreases with increasing of an angle of the incident input and the most significant change occurs in the prism angles close to the first critical value, which may be associated with a generate of refracted of the longitudinal (creeping) wave. A form of the piezoelectric plates and used converters showed no significant effect on the width of the direction pattern.

Keywords: piezoelectric transducer, piezoelectric plate, direction pattern, additional plane.

+ - About the Authors Click to collapse

N. N. Konovalov (STC “Industrial Safety”, Moscow, Russia) Е-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.
R. H. Rafikov (Moscow Technological University, Moscow, Russia)
M. N. Preobrazhensky (Yaroslavl State University P. G. Demidov, Yaroslavl, Russia)

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