Naslov
Influence of the calorimetric system setup on the output acoustic power measurement results

Autori
Petošić Antonio, Ivančević Bojan, Svilar Dragoljub

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings Croatian Society Electronics in Marine / M. Grgić, S. Grgić - Zadar : Hrvatsko društvo Elektronika u pomorstvu (ELMAR), 2008, 325-331

ISBN
978-953-7044-06-0

Skup
ELMAR 2008

Mjesto i datum
Zadar, Hrvatska, 10.09.2008. - 12.09.2008

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
calorimetric method; ultrasound transmitterr; cavitation; electroacoustic efficiency factor; radiation impedance

Sažetak
The problem of measuring an output acoustic power using calorimetric method has been considered in the nonlinear regimes of ultrasound transmitter. The point ultrasound source with sonotrode tip has been driven at different excitation electrical power levels and the influence of the tip position in the different calorimetric systems on the measurement results on output acoustic power is considered. Two calorimetric systems with different volumes of loading liquid (water) and different geometries (having influence on thermodynamical losses) have been used in the experiments. The exponential experimental temperature-time curves have been fitted with theoretical solutions and losses of the systems, output acoustic power and electroacoustic efficiency factor have been found assuming that all ultrasound energy is absorbed in the system. The radiation impedance dependence on complex pressure field distribution in the calorimetric system has been considered measuring the input electrical impedance of loaded and unloaded transmitter.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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