NONLINEAR ENERGY EXCHANGE AMONG HARMONIC MODES AND ITS APPLICATIONS TO NONLINEAR IMAGING

被引:7
作者
WU, JY [1 ]
SHUNG, KK [1 ]
机构
[1] PENN STATE UNIV,BIOENGN PROGRAM,UNIVERSITY PK,PA 16802
关键词
D O I
10.1121/1.399689
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
Nonlinear energy exchange and redistribution among the harmonic modes have been investigated. A problem with the pre-bias boundary condition, which means that in addition to the fundamental harmonic, nonzero higher harmonics with adjustable amplitudes and phases are also applied to the input simultaneously, has been considered. The results show that the pre-bias technique that is proposed in this paper may offer a better means for detecting the nonlinear properties of the medium. The feasibility of the approach was validated by computer simulation and experimental results. © 1990, Acoustical Society of America. All rights reserved.
引用
收藏
页码:2852 / 2858
页数:7
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