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Lamb wave radiation from plate termination in a liquid |
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| Authors: | Q-G Zhu HJ Ruf WG Mayer |
| Institution: | Ultrasonics Research Laboratory, Physics Department, Georgetown University, Washington, DC 20057, USA |
| Abstract: | The liquid wedge method is used to excite leaky Lamb waves on an aluminium plate while the plate is immersed in water. The excitation occurs near the end of the plate so that sonic energy of the excited mode radiates into the liquid. A Schlieren method is used to observe the radiation pattern and a correlation is made between the radiation lobe structure and the symmetric or antisymmetric nature of the excited mode. Theoretical calculations of the transfer of energy from the plate to the liquid are made and agreement between theory and experiment is obtained. |
| Keywords: | leaky Lamb modes radiation pattern Schlieren imaging energy transfer calculations |
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