Measurement of reflected second harmonics and nonlinearity parameter using a transducer with complex structure

作     者：MA Qingyu, LU Rongrong, ZHANG Dong, GONG Xiufen, LIU Xiaozhou (State key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210097,China) 

作者机构：State key Laboratory of Modern Acoustics Institute of Acoustics Nanjing University Nanjing 210097 China 

出 版 物：《声学技术》 (Technical Acoustics)

年 卷 期：2003年第22卷第Z1期

页      面：24-27页

学科分类：07[理学] 08[工学] 070206[理学-声学] 0802[工学-机械工程] 0702[理学-物理学] 

基　　金：SupportedbyNationalScienceFoundationofChina(No :1983 40 40andNo :10 2 0 40 14 ) 

主　　题：nonlinearity parameter, reflective mode, compound transducer 

摘      要：Measurement of nonlinearity parameter using the second-harmonic reflective model is studied. A new kind of compound transducer is designed and fabricated for this purpose. With this transducer and the finite amplitude insert-substitution method, an experimental system to measure the nonlinearity parameter using reflective model is developed. B/A values of some liquids and biological tissues are obtained and results coincide well with those presented in the literatures.