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《北京理工大学学报(英文版)》 2011-02
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Field measurement method for ultrasonic transducer based on inverse Abel transform

KONG Tao, XU Chun-guang, XIAO Ding-guo (School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)  
A new reflection approach for field distribution measurement of ultrasonic transducers was investigated. Instead of a point-like reflection target (rigid sphere) or thin wires (line-like targets), a line response function of experimental knife-edge distribution combined with the inverse Abel transforms was used to estimate the lateral beam distributions of ultrasonic transducers. The measurement steps were as follows:① A knife-edge was scanned perpendicularly to acoustic beam axis of the transducer using an ultrasonic C-scan system to obtain its ultrasonic image line response function, ② the transverse beam distribution was solved by the inverse Abel transforms, and ③ experiments were performed to obtain the lateral beam profiles of two transducers, with and without focus, and the results were compared with those from a hydrophone. The results showed that this method was effective for ultrasonic field measurement and could be as a substitute for hydrophone in most cases.
【Fund】: Supported by the“111”Project of China(B08043)
【CateGory Index】: TB552
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