Title :
Ultrasonic transducers with Bessel function distribution of vibrational amplitude on their surface
Author :
Kielczynski, P. ; Pajewski, W. ; Szalewski, M.
Author_Institution :
Inst. of Fundamental Technol. Res., Polish Acad. of Sci., Warsaw, Poland
Abstract :
The far field and near field of an ultrasonic circular transducer with a Bessel distribution of vibrational amplitude on its surface are calculated. The vibrational characteristics of ultrasonic transducers consisting of a ceramic ring filled with a plastic disk are considered. Assuming that the amplitude on the surface of the plastic disk inside the ring is described by the Bessel function of zero order, the directivity patterns (in air) were calculated. The directivity characteristics of those transducers measured experimentally are presented
Keywords :
ultrasonic transducers; Bessel function distribution; ceramic ring; directivity patterns; far field; near field; plastic disk; surface; ultrasonic circular transducer; vibrational amplitude; vibrational characteristics; Acoustic beams; Acoustic transducers; Ceramics; Focusing; Piezoelectric transducers; Plastics; Resonance; Transfer functions; Ultrasonic imaging; Ultrasonic transducers;
Conference_Titel :
Ultrasonics Symposium, 1991. Proceedings., IEEE 1991
Conference_Location :
Orlando, FL
DOI :
10.1109/ULTSYM.1991.234211
