High power ultrasound for acoustic source applications

J.W. Mackersie, I. Timoshkin, S.J. MacGregor

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

High Power Ultrasound (HPU) can be generated by the application of Pulsed Power Technology to produce acoustic waves of high power and bandwidth. A study was conducted into the variation of the amplitude and frequency content of the acoustic signal with the applied voltage, pulse energy and electrode separation.
Measurements indicate that, for a given electrode separation, whilst there is some increase in the amplitude of the detected acoustic emission with an increase in the electrical pulse energy it is only a modest effect. For a given pulse energy a considerably greater increase in the acoustic signal is observed when the distance between the electrodes is extended - thereby increasing the size of the signal source. The maximum amplitude of the detected signal approximately varies as the electrode separation to the power of (2)/(3). At large separations the delay time between the application of the voltage pulse and the breakdown of the water is considerable thus allowing energy loss through ionic conduction in the water.
Original languageEnglish
Title of host publicationProceedings of the 26th international power modulator symposium and 2004 high voltage workshop
Subtitle of host publicationconference record
Place of PublicationNew York
PublisherIEEE
Pages458-461
Number of pages4
ISBN (Print)0780385861
DOIs
Publication statusPublished - 2004
Event26th International Power Modulator Symposium/High Voltage Workshop - San Francisco, United States
Duration: 23 May 200426 May 2004

Conference

Conference26th International Power Modulator Symposium/High Voltage Workshop
CountryUnited States
CitySan Francisco
Period23/05/0426/05/04

Keywords

  • high power
  • ultrasound
  • acoustic
  • source applications
  • acoustic applications
  • ultrasonic imaging
  • pulse measurements
  • pulse generation
  • power generation
  • electrodes
  • breakdown voltage
  • acoustic emission
  • acoustic pulses , Acoustic signal detection

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  • Cite this

    Mackersie, J. W., Timoshkin, I., & MacGregor, S. J. (2004). High power ultrasound for acoustic source applications. In Proceedings of the 26th international power modulator symposium and 2004 high voltage workshop: conference record (pp. 458-461). New York: IEEE. https://doi.org/10.1109/MODSYM.2004.1433612