An investigation of the Diffraction Effects Limitations of the Thick Piezoelectric Disk Method in Calibrating Ultrasonic Receivers
This paper deals with the transient calibration method of ultrasonic planar receivers, which uses a thick piezoelectric disk source as a reference transmitter. When such a source is excited by a short impulse current, it generates a step-shaped plane-wave pressure of well-known amplitude which can be considered as a standard pressure. In this paper, the diffraction effects due to the limited dimensions of the reference transmitter as well as the surface averaging of the incident pressure on the receiver to be calibrated are taken into account. By using the exact solution of this coupling problem, the optimal calibration conditions as well as the limitations of the method are discussed.
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Document Type: Research Article
Publication date: March 1, 1998
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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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