Mode conversion and the path of acoustic energy in a partially water-filled aluminum tube

被引：17

作者：

Shannon, K ^{[1
]}

Li, X ^{[1
]}

Wang, Z ^{[1
]}

Cheeke, JDN ^{[1
]}

机构：

[1] Concordia Univ, Montreal, PQ H3G 1M8, Canada

来源：

ULTRASONICS | 1999年 / 37卷 / 04期

关键词：

mode conversion; lamb waves; circumferential waves; fluid loading; liquid level sensor;

D O I：

10.1016/S0041-624X(99)00006-2

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Mode conversion is observed in a water-loaded thin-walled Al tube with a horizontal central axis. A 1 MHz pulse is applied to the tube by a transducer coupled to the tube's external wall in a pulse-echo configuration. The tube is filled to 36 different levels, and a waveform is acquired at each level. Analysis shows that the acoustic energy must propagate both in the tube wall as an A(o)-mode Lamb wave and as a bulk wave in the water. Mode conversion between these two waves is shown to take place both in the air-water interface and as energy leakage in the water-loaded portion of the tube. A unique echo train is observed at each fill level, suggesting that a liquid level sensor can be developed based on this mode conversion. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：303 / 307

页数：5

共 5 条

[1] MODE CONVERSION OF RAYLEIGH AND LAMB WAVES TO COMPRESSION WAVES AT A METAL-LIQUID INTERFACE [J].