Mechanical design implications on power transfer through thick metallic barriers using piezoelectric transducers

K. R. Wilt, T. J. Lawry, H. A. Scarton, S. Roa-Prada, G. J. Saulnier, J. D. Ashdown, P. K. Das, J. D. Pinezich

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

17 Scopus citations

Abstract

Traditionally, power transfer through thick metallic barri- ers has required physical penetrations and wire feed-throughs, which reduces structural integrity and limits the environmental isolation provided by the barrier. The Faraday shielding pre- sented by these barriers, however, prevents efficient transfer of electromagnetic power, limiting many RF coupling techniques. More recently, the use of ultrasound has been shown as an ef- fective non-destructive technique for transmitting large amounts of power (100s of watts) through solid metallic mediums. By us- ing two coaxially aligned piezoelectric transducers loaded onto opposite sides of the barrier through an acoustic couplant, an ultrasonic channel is formed through which efficient power de-livery is possible. This work presents finite element modeling and simulations that help characterize the impacts of many me- chanical design factors on the power transfer efficiency of these ultrasonic channels, including: transducer-wall coupling effects, transducer and wall resonance modes, transducer dimensions, and barrier composition and dimensions. Physical channel mea- surements are also presented to show the strong correlation be- tween the finite element simulations and the systems modeled.

Original languageEnglish
Title of host publicationASME 2010 International Mechanical Engineering Congress and Exposition, IMECE 2010
Pages173-182
Number of pages10
DOIs
StatePublished - 2010
Externally publishedYes
EventASME 2010 International Mechanical Engineering Congress and Exposition, IMECE 2010 - Vancouver, BC, Canada
Duration: 12 Nov 201018 Nov 2010

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume13

Conference

ConferenceASME 2010 International Mechanical Engineering Congress and Exposition, IMECE 2010
Country/TerritoryCanada
CityVancouver, BC
Period12/11/1018/11/10

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