STUDY OF THE VELOCITY DISPERSION OF ACOUSTIC-WAVES IN PERIODIC STRUCTURES

被引：0
作者：
GAZANHES, C
SAGELOLI, J
机构：
来源：
ACUSTICA | 1995年 / 81卷 / 03期
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D O I：
暂无
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The velocity dispersion of ultrasonic waves by a periodic structure is studied by investigating the propagation perpendicular to the layer of the structure, in the 0.1-2 MHz frequency range. The Wigner-Ville transform in the time-frequency analysis shows the allowed and forbidden bands of the dispersion relations. The phase velocity is measured as a function of frequency in the first allowed band. Good agreement between theory and experiment is obtained, even if the structure is made up of several layers, four in this experiment.
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页码：221 / 227
页数：7
相关论文
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