Scopul nostru este sprijinirea şi promovarea cercetării ştiinţifice şi facilitarea comunicării între cercetătorii români din întreaga lume.
Autori: I. Chilibon, M. Wevers, J.P. Lafaut, L. Baert
Editorial: CD-ROM Proceedings of the Twelfth International Congress on Sound and Vibration (ICSV12), July 11-14, 2005, Lisbon, Portugal, p.448 Paper, 2005.
This paper presents an ultrasound piezoceramic transducer, centred into an extracorporeal
shock wave lithotriptor system. The electromagnetic acoustic source lithotriptor initiates the incident shock waves into the water, and the ultrasound transducer improves caviational effects of the bubbles. The piezoelectric transducer is powered by a Function/Pulse Generator type IWATSU SG-4511, and converts the electrical signal in mechanical vibrations, which are propagated into the water. The underwater waves, received by the PZT disc sensor, are converted in electrical signals and displayed by LeCroy 9310 AM oscilloscope. The transducer exhibits low resonance frequency, tuneable energy, broad bandwidth, between 16 kHz to 36 kHz, and low quality factor, that means it is optimum for this application.
Extracorporeal shock wave lithotriptor system generates cavitation bubbles that have essential role in the disintegration of renal calculi.
Cuvinte cheie: Ultrasound, Underwater Transducer