Access Restriction

Author Petosic, A. ♦ Ivancevic, B. ♦ Svilar, D.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2008
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Electricity & electronics ♦ Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Nonlinear acoustics ♦ electroacoustic efficiency factor ♦ ultrasound transmitters ♦ Geometry ♦ calorimetric method ♦ Power measurement ♦ Ultrasonic imaging ♦ Ultrasonic variables measurement ♦ Transmitters ♦ Electric variables measurement ♦ Position measurement ♦ Acoustic measurements ♦ radiation impedance ♦ Impedance ♦ cavitation
Abstract 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.
Description Author affiliation: Fac. of Electr. Eng. & Comput., Univ. of Zagreb, Zagreb (Petosic, A.; Ivancevic, B.) || Brodarski Inst., Zagreb (Svilar, D.)
ISBN 9781424433643
ISSN 13342630
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2008-09-10
Publisher Place Croatia
Rights Holder ELMAR-Croatian Society Electronics in Marine
Size (in Bytes) 328.55 kB
Page Count 7
Starting Page 325
Ending Page 331

Source: IEEE Xplore Digital Library