Design Alterations of a High Power Air Transducer

Document type: Journal Articles
Article type: Original article
Peer reviewed: Yes
Author(s): Claes Hedberg, Hamid Ghazisaeidi, Kristian Haller, Etienne Mfoumou
Title: Design Alterations of a High Power Air Transducer
Translated title: Designändringar av en högamplitudsluftsändare.
Journal: Japanese Journal of Applied Physics
Year: 2007
Volume: 46
Issue: 7
Pagination: 4908-4911
ISSN: 0021-4922
ISI number: 000248545500098
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Mechanical Engineering (Sektionen för teknik – avd. för maskinteknik)
School of Engineering S- 371 79 Karlskrona
+46 455 38 50 00
http://www.bth.se/ing/
Authors e-mail: claes.hedberg@bth.se, hamidgs@gmail.com, kristian.haller@bth.se, etienne.mfoumou@bth.se
Language: English
Abstract: For certain resonant high-power air transducers exists a radiating cone which is in some way connected to a forcing piezoelectric ceramic. This study focuses purely on the cone structure itself, and the form of excitation that gives desired results on the vibration modes of the cone. In the new design three different parameters are changed from existing devices. They are: 1) the change of the round piezoelectric disc center position to a piezoelectric ring shape, while making the cone center fixed, 2) the cutting of the cone into leaves, and 3) the radial thickness decreasing with radius. In simulations, the new design yields considerably higher vibration amplitudes.
Summary in Swedish: En högamplitudsändare för luft har utvecklats. Jämfört med existerande sändare har tre designändringar gjorts som innebär en väsentligt ökad vibrationsamplitud, och därmed ett större ljudtryck.
Subject: Mechanical Engineering\Structural Dynamics
Keywords: Ultrasonic transducer, Vibration response, Air-coupled transducer, Acoustic air transducer, High power air transducer
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