The application of finite element analysis in the design of high intensity ultrasonic systems

G. Harvey, A. Gachagan, A. McNab

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

1 Citation (Scopus)

Abstract

This paper describes the application of a noninvasive field measurement approach linked with FE design techniques to optimise the identification and control of pressure
node locations (associated with regions of cavitation) within small liquid filled vessels (e.g. 100mm diameter, 150mm height). The measurement technique is based on the interferometric detection of refractive index changes in transparent media due to pressure, coupled with modified tomographic scanning routines, to allow the reconstruction of a three-dimensional map of pressure within cylindrical vessels. Importantly, an adaptive algorithm was developed to control the firing angle of the interferometer in order to compensate for the refractional effects introduced by
arbitrary cell structures and hence, maintain the parallel projections essential for reconstruction accuracy. These systems were simulated in the FE domain with good correspondence between the optically measured profiles and theoretical profiles
established. The validated virtual prototyping platform was then used to design systems with specific field characteristics for increased probability of cavitational effects. Examples of improved designs utilising variations in cell arrangements and characteristics are presented.
Original languageEnglish
Title of host publicationProceedings of the 2005 IEEE Ultrasonics Symposium
EditorsM.P. Yuhas
PublisherIEEE
Pages430 - 433
Number of pages4
ISBN (Print)0-7803-9382-1
DOIs
Publication statusPublished - Sep 2005
Event2005 IEEE Ultrasonics Symposium - Rotterdamn, Netherlands
Duration: 18 Sep 200521 Sep 2005

Conference

Conference2005 IEEE Ultrasonics Symposium
CountryNetherlands
CityRotterdamn
Period18/09/0521/09/05

Keywords

  • biomedical measurements
  • design optimization
  • finite element methods
  • image reconstruction
  • ultrasonic variables measurement

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