LOCAL PHASE-VELOCITY MEASUREMENTS IN PLATES

被引：9
|
作者：
CLARK, NH
THWAITES, S
机构：
[1] CSIRO Division of Applied Physics, Lindfield, NSW 2070
来源：
JOURNAL OF SOUND AND VIBRATION | 1995年 / 187卷 / 02期
关键词：
D O I：
10.1006/jsvi.1995.0518
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
A method for measuring local phase velocities in panels, in the range 5-50 kHz, in the presence of a strongly reverberant field, and within 10 cm of structural discontinuities such as ribs, is described. The method gives a resolution of 1-2% and a 2-3% reproduceability. Measurements of the phase velocity as a function of direction for a three-ply and a 12-ply carbon-fibre composite plate are presented. Local values of the elastic properties of individual laminae in the plates, as a function of direction, are calculated from the phase velocities. Small variations in the lay-up angles of some of the laminae are also detected. (C) 1995 Academic Press Limited
引用
收藏
页码：241 / 252
页数：12
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