Absolute Single-Mode Lamb Wave Generation by Laser in a Thin Plate |
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| Journal | Key Engineering Materials (Volumes 321 - 323) |
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| Volume | Advanced Nondestructive Evaluation I |
| Edited by | Seung-Seok Lee, Joon Hyun Lee, Ik Keun Park, Sung-Jin Song, Man Yong Choi |
| Pages | 108-111 |
| DOI | 10.4028/www.scientific.net/KEM.321-323.108 |
| Citation | Seung Seok Lee et al., 2006, Key Engineering Materials, 321-323, 108 |
| Online since | October, 2006 |
| Authors | Seung Seok Lee, Sang Whoe Dho |
| Keywords | Anti-Symmetric Lamb Wave, Laser Ultrasonic, Single-Mode Generation, Symmetric Lamb Wave |
| Abstract | We present a laser-ultrasonic technique to generate the lowest symmetric ( ) Lamb wave in a thin plate. Using this special technique, in which two symmetric laser beams quasi-simultaneously hit at the same point on both sides of the plate, we absolutely suppress anti-symmetric Lamb wave modes. This technique is applicable to any situation that requires symmetric Lamb wave mode operation and does not need additional contacts or special equipments. |
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