| Autor: |
Lafleur, L. Dwynn, Shields, F. Douglas, Lawrenson, Christopher C. |
| Zdroj: |
Journal of the Acoustical Society of America; 1994, Vol. 95 Issue 5, p2961-2961, 1p |
| Abstrakt: |
Using Del Grosso's theoretical treatment [V. A. Del Grosso, ''Errors in Ultrasonic Propagation Parameter Measurements. Part 4-Effect of Finite Thickness Solid Tubes Enclosing the Liquid Cylinder of Interest,'' NRL Report 6852, Naval Research Laboratory, Washington, DC (1968)] as a foundation, axisymmetric modes of progressive wave propagation in a liquid-filled elastic waveguide are studied. The waveguide system consists of a liquid cylinder surrounded by a hollow cylinder of elastic solid of arbitrary thickness. Dispersion curves and particle displacement profiles for propagating modes are calculated for several liquid/solid combinations. Modal characteristics are compared to those in the extreme cases of the rigidly bound cylinder and the empty hollow elastic cylinder. It is also shown that certain liquid/solid combinations can produce a near-plane-wave mode propagating at the intrinsic sound speed of the liquid over a range of frequencies. Experimental measurements demonstrating modal properties are presented. [Work supported by ONR.] [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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