Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/72351
Type: Artigo de periódico
Title: The resonance frequencies on mechanically pre-stressed ultrasonic piezotransducers
Author: Arnold, FJ
Muhlen, SS
Abstract: The piezotransducers employed in high power ultrasound are composed of piezoelectric ceramics and metallic pieces. These transducers are mechanically pre-stressed in order to avoid the ceramic fractures when high voltage is applied under resonance. The resonance and anti-resonance frequencies are shifted depending on the level of applied mechanical pre-stressing. This paper discusses some causes of this shifting on a experimental study. The discussion takes into account the variations on characteristic parameters of the ceramics and the acoustic coupling between parts of the transducer. (C) 2001 Elsevier Science B.V. All rights reserved.
Subject: transducers
piezoelectrics
pre-stressing
ultrasound
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/S0041-624X(00)00047-0
Date Issue: 2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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