On the steering of sound energy through a supercritical plate by a near-field transducer array

Brian E. Anderson, W. Jack Hughes, Stephen A. Hambric

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


The ability to direct sound energy through the flexural vibrations of a submerged plate at various angles of incidence using a near-field transducer array is investigated. An alumina bar is placed in front of a one-dimensional, eight-element transducer array, between the array and the water. Operating in a receive mode, data were taken as a function of angle of incidence and compared to data taken without the presence of the alumina bar. The array was also operated in transmit mode and results were compared to corresponding receive mode data, showing that reciprocity holds. Results show that in fact sound energy can be steered through a plate, and that the measurement method used provides a convenient method of measuring the angular dependence of transmission through a plate, including measurements at frequencies above the plate's critical frequency. Experimental results of sound transmission versus angle of incidence of finite sized plates agree qualitatively with theoretical results from an analysis of the transmission through an unbounded flexible partition.

Original languageEnglish (US)
Pages (from-to)2613-2619
Number of pages7
JournalJournal of the Acoustical Society of America
Issue number5
StatePublished - 2008

All Science Journal Classification (ASJC) codes

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics


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