DocumentCode :
2715845
Title :
A Novel Method for Performance Evaluation of Focused Ultrasonic Transducers
Author :
Lee, Sunheum ; Choi, Kwansun ; Kim, Dongsik ; Jeon, Changwan ; Ahn, Young Doo
Author_Institution :
Soonchunhyang Univ., Asan
Volume :
2
fYear :
2007
fDate :
6-8 Dec. 2007
Firstpage :
448
Lastpage :
452
Abstract :
The characteristic information about an ultrasonic transducer is generally described by the ultrasonic R/F signal back from a reflector and its frequency characteristics in the data sheet. The information can, however, hardly assure that the focused ultrasonic transducer would produce well-focused sound fields which the performance of the transducer absolutely depend on. Therefore, we propose the measured size of focal spot and the reconstructed shape of effective focal zone in the focused sound field as novel measures for the performance evaluation of the focused ultrasonic transducers. The process of getting the both of the transducers is conducted by the implemented software including sound field scanning and virtual 3D reconstruction functions which requires the echo of a point reflector. The proposed method could effectively distinguish superior ones among many transducers made in the same specification and be also used to detect the performance degradation due to the aging of the transducers.
Keywords :
performance evaluation; ultrasonic transducers; effective focal zone; focal spot; focused ultrasonic transducers; performance degradation; performance evaluation; sound field scanning; virtual 3D reconstruction; well-focused sound fields; Acoustic transducers; Frequency; Inspection; Oscillators; Reliability engineering; Shape measurement; Signal resolution; Size measurement; Ultrasonic transducers; Ultrasonic variables measurement;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Future Generation Communication and Networking (FGCN 2007)
Conference_Location :
Jeju
Print_ISBN :
0-7695-3048-6
Type :
conf
DOI :
10.1109/FGCN.2007.28
Filename :
4426279
Link To Document :
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