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Response of the Average Pressure Acting on the Surface of an Emitting Circular Transducer Due to Different Reflecting Objects

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A pulsed R. F. voltage is applied to the electrodes of a piezoelectric circular transducer. The resulting ultrasonic signal is propagated into a medium of very low attenuation and reflected back by a flat, cylindrical or spherical reflector. Every time the ultrasonic signal strikes the transducer a certain voltage is induced between the electrodes of the piezoelectric transducer, which is amplified and observed on an oscilloscope. Response curves giving the dependence of the amplitude of the received signal on the distance between reflector and transducer are obtained.

As an exact mathematical expression for the system is very complicated, approximated theoretical responses are obtained and compared with the experimental ones. It is shown that theory and experiment are in good agreement with each other.
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Document Type: Research Article

Publication date: July 1, 1972

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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