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Titolo:
ON THE RELATION BETWEEN SURFACE-WAVES ON A BUBBLE AND THE SUBHARMONICCOMBINATION-FREQUENCY EMISSION
Autore:
RAMBLE DG; PHELPS AD; LEIGHTON TG;
Indirizzi:
UNIV SOUTHAMPTON,INST SOUND & VIBRAT RES SOUTHAMPTON SO17 1BJ HANTS ENGLAND
Titolo Testata:
Acustica
fascicolo: 5, volume: 84, anno: 1998,
pagine: 986 - 988
SICI:
1436-7947(1998)84:5<986:OTRBSO>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
2-FREQUENCY EXCITATION; GAS-BUBBLES; OSCILLATIONS;
Tipo documento:
Letter
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
13
Recensione:
Indirizzi per estratti:
Citazione:
D.G. Ramble et al., "ON THE RELATION BETWEEN SURFACE-WAVES ON A BUBBLE AND THE SUBHARMONICCOMBINATION-FREQUENCY EMISSION", Acustica, 84(5), 1998, pp. 986-988

Abstract

The characterisation of bubbles using a two-frequency excitation technique is known to accurately detect and size certain bubble samples. This is done through the generation of a signal at omega(i) +/- w(p)/2 when the bubble is insonified by a fixed MHz imaging signal, omega(i),and a variable pumping frequency, omega(p), tuned to the bubble's resonance. Recent work has suggested that the principal mechanism for thegeneration of the omega(i) +/- w(p)/2 signal is linked to the onset of surface waves on the bubble's surface. This paper strengthens this argument through the comparison of published experimentally measured thresholds for the omega(i) +/- omega(p)/2 signal with recent theoretical models which predict the driving sound field pressure amplitudes required for the onset of surface waves on a spherical surface.

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Documento generato il 15/07/20 alle ore 07:35:22