Title :
PVDF cylindrical film air ultrasonic transducer influenced by axial film length
Author_Institution :
Meas. Specialties Inc., Lawrenceville, GA, USA
Abstract :
This paper presents a theory of coupling between radial and axial length modes of a PVDF cylindrical film air transducer. The main operational mode is by radial vibration (65 kHz breathing mode) and it is found the axial length vitally influences the device performance and axial length exceeding a critical value does not enhance acoustic output, and power efficiency becomes lower. Experimental data agrees with the theoretical results.
Keywords :
ultrasonic transducers; vibrational modes; PVDF cylindrical film air ultrasonic transducer; axial film length; axial length modes; power efficiency; radial length modes; radial vibration; Length measurement; Strain; Air Transducer; Cylindrical PVDF; Radial-Axial mode coupling; Two dimensional analysis;
Conference_Titel :
Ultrasonics Symposium (IUS), 2014 IEEE International
Conference_Location :
Chicago, IL
DOI :
10.1109/ULTSYM.2014.0392
