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Analysis of a time-domain method to compute ultrasonic field through interfaces

AuthorsBuiochi, Flávio; Martínez-Graullera, Óscar CSIC ORCID ; Gómez-Ullate Alvear, Luis; Montero de Espinosa Freijo, Francisco
KeywordsBroadband transducers
Radiated ultrasonic field computation
Time-domain methods
Transmitted field
Nondestructive evaluation by ultrasound
Issue DateSep-2002
PublisherSociedad Española de Acústica
CitationForum Acusticum Sevilla 2002. Ultrasonics ; ULT-03-003-IP
AbstractThis paper analyzes a time-domain method to compute the ultrasonic field radiated by broadband transducers when the acoustic field impinges interfaces. As first step, the impulse response velocity potential is determined at the interface using the Rayleigh integral. In a second step, the transmitted field is calculated considering that every elementary portion of the interface radiates a hemispherical wave. The aim of the work is to determine a compromise between the accuracy of the method and the computation time, having the temporal sampling of the transmitted signal and the spatial sampling of the aperture and the interface as variables.
Description6 pages, 6 figures.-- PACS nr.: 43.35.Zc.-- Communication presented at: Forum Acusticum Sevilla 2002 (Sevilla, Spain, 16-20 Sep 2002), comprising: 3rd European Congress on Acoustics; XXXIII Spanish Congress on Acoustics (TecniAcústica 2002); European and Japanese Symposium on Acoustics; 3rd Iberian Congress on Acoustics.-- Special issue of the journal Revista de Acústica, Vol. XXXIII, year 2002.
Appears in Collections:(IAI) Comunicaciones congresos
(IA) Comunicaciones congresos

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