FOURIER FORMALISM FOR DESCRIBING NONLINEAR SELF-DEMODULATION OF A PRIMARY NARROW ULTRASONIC BEAM

被引:16
作者
CERVENKA, P
ALAIS, P
机构
[1] Laboratoire de Mécanique Physique, Place de la Gare de Ceinture
关键词
D O I
10.1121/1.399926
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
Presented here is the derivation of nonlinear interactions that occur within a primary narrow beam for which the temporal spectrum is continuous and narrow. This follows the bases of the Fourier formalism. Acoustics levels are presumed weak enough so that second-order equations may be used. In the quasilinear case, the exact theoretical expression of the created parametric farfield, formed from a transient modulated primary signal, is established, by using weakly restrictive assumptions. The case of high primary levels is discussed. Some experimental results are presented. © 1990, Acoustical Society of America. All rights reserved.
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页码:473 / 481
页数:9
相关论文
共 36 条
[1]   ACOUSTICAL-HOLOGRAPHY AND IMAGING [J].
ALAIS, P .
REVUE DE PHYSIQUE APPLIQUEE, 1976, 11 (05) :559-580
[2]  
ALAIS P, 1976, CR ACAD SCI B PHYS, V282, P385
[3]  
ALAIS P, 1976, CR ACAD SCI B PHYS, V282, P421
[4]  
ALAIS P, 1979, ACUSTICA, V43, P1
[5]   FOURIER ANALYTICAL STUDY OF NONLINEAR PHENOMENA AFFECTING ULTRASONIC PROPAGATION IN A FLUID - PARAMETRIC EMISSION - NONLINEAR AUTODEMODULATION [J].
ALAIS, P ;
HENNION, PY ;
CERVENKA, P .
REVUE DE PHYSIQUE APPLIQUEE, 1985, 20 (06) :285-297
[6]  
ALAIS P, 1976, CR ACAD SCI A MATH, V282, P547
[7]  
ALAIS P, 1979, J PHYS-PARIS, V40, P83
[8]  
ALAIS P, 1984, 10TH P INT S NONL AC
[9]  
ALAIS P, 1976, 7TH P INT S NONL AC