Title :
Characteristics of circumferential waves in thin walled tube acoustic devices
Author :
Cheeke, J.D.N. ; Li, X. ; Wang, Z.
Author_Institution :
Dept. of Phys., Concordia Univ., Montreal, Que., Canada
Abstract :
We present a theoretical and experimental study of circumferential acoustic modes in thin walled tubes. The results are similar to those for thin plates in the limit of thin walled tubes with large radius of curvature. A large (21%) decrease in group velocity of the lowest Lamb-type flexural mode was observed for water loading inside the tube. The results indicate that this system is a promising sensor candidate, especially for liquids
Keywords :
surface acoustic wave devices; surface acoustic wave sensors; Lamb-type flexural mode; circumferential waves; group velocity; liquid sensor; radius of curvature; thin walled tube acoustic device; water loading; Acoustic devices; Acoustic propagation; Acoustic sensors; Acoustic waves; Cutoff frequency; Liquids; Physics; Sensor phenomena and characterization; Sensor systems; Thin wall structures;
Conference_Titel :
Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2940-6
DOI :
10.1109/ULTSYM.1995.495617
