Title :
Metal-polymer multilayer absorber for ultrasonic transducers
Author :
Toda, Minoru ; Thompson, Mitchell
Author_Institution :
Meas. Specialties Inc., Hampton, VA, USA
Abstract :
Details of a metal-polymer multilayer absorber for ultrasonic transducers have been investigated. Multiple copper layers with pre-applied adhesive provided attenuation of 220dB/cm with an impedance of 4MRayl and a velocity of 890m/s at 3MHz. These results agreed with design theory and it was shown that the attenuation was high enough to be useful as a backing absorber ultrasonic transducers in the MHz range made with piezoelectric ceramic materials.
Keywords :
conducting polymers; copper; multilayers; ultrasonic transducers; Cu; adhesive; frequency 3 MHz; impedance; metal-polymer multilayer absorber; piezoelectric ceramics; ultrasonic transducers; Acoustics; Attenuation; Copper; Impedance; Mathematical model; Nonhomogeneous media; backing absorber; desgn theory; metal-polymer; multilayer;
Conference_Titel :
Ultrasonics Symposium (IUS), 2011 IEEE International
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4577-1253-1
DOI :
10.1109/ULTSYM.2011.0205
