Continuous‐wave pressure fields of ultrasonic transducers
作者:
David A. Hutchins,
H. D. Mair,
P. A. Puhach,
A. J. Osei,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1986)
卷期:
Volume 80,
issue 1
页码: 1-12
ISSN:0001-4966
年代: 1986
DOI:10.1121/1.394164
出版商: Acoustical Society of America
关键词: THREE−DIMENSIONAL CALCULATIONS;SOUND FIELDS;SOUND PRESSURE;ULTRASONIC TRANSDUCERS;PZT;POLYVINYLS;FLUORINATED ALIPHATIC HYDROCARBONS
数据来源: AIP
摘要:
The radiated pressure fields of axisymmetric ultrasonic transducers have been measured experimentally at a single frequency to a high resolution. Results in both the nearfield and farfield have been compared to the prediction of theory in three dimensions, developed to examine transducers vibrating with an arbitrary amplitude and phase distribution across their front face. Good correlation was obtained for polyvinylidene fluoride (PVDF) radiators, assuming plane‐piston‐type behavior. For lead zirconate titanate (PZT) transducers, marked amplitude variations with radius across the disk face were encountered, and these needed to be modeled theoretically to obtain good agreement with experiment. Other predictions of theory which are of interest to applications involving acoustical imaging are presented.
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