NDLI: Waveguide for transmitting and radiating high-frequency, high-power ultrasound using higher mode vibrations of a cylindrical rod

Content Provider	IEEE Xplore Digital Library
Author	Hatano, H.
Copyright Year	1986
Abstract	It was shown that a cylindrical solid rod, with a diameter several times larger than the wavelength, can be used as an efficient waveguide for transmitting and radiating high-power ultrasound at higher frequencies. A number of cylindrical rods of varying size and material were tested, and their efficiency as a waveguide was evaluated by the measurements of mechanoacoustic efficiency when the radiating end of the rod was immersed in water for an acoustical load. As an example of waveguide application, a mock-up water atomizer was constructed and shown to work stably at a continuous input of 200 W at 500 kHz. As a consequence of analytical and experimental considerations of the higher mode vibrations of cylindrical rods, a diagram for the optimal design of the waveguides was constructed. For instance, an aluminum alloy rod 6.9 cm in diameter and 23.3 cm in length yielded a mechanoacoustic efficiency as high as 88% at 500 kHz. For high temperature applications, the cylindrical rod can be used as a radiator of heat, as well as for a separator of the piezoelectric transducer from the hot object.
Starting Page	518
Ending Page	524
Page Count	7
File Size	1259386
File Format	PDF
ISSN	08853010
Volume Number	52
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ultrasonic imaging Acoustic waveguides Solids Frequency Acoustic materials Acoustic testing Materials testing Acoustic measurements Size measurement Ultrasonic variables measurement
Content Type	Text
Resource Type	Article
Subject	Acoustics and Ultrasonics Instrumentation Electrical and Electronic Engineering

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