Mode selective excitation and detection of Lamb waves

K. Hahn; U. Amjad; K. S. Tarar; D. Jha; W. Grill

doi:10.1117/12.847740

8 April 2010 Mode selective excitation and detection of Lamb waves

K. Hahn, U. Amjad, K. S. Tarar, D. Jha, W. Grill

Proceedings Volume 7650, Health Monitoring of Structural and Biological Systems 2010; 76500D (2010) https://doi.org/10.1117/12.847740
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2010, San Diego, California, United States

Abstract

Transducer arrangements including specially designed electronic drive and detection circuitry are presented, suitable to distinguish between the orthogonal symmetric and anti-symmetric Lamb wave modes. Whereas transducers mounted on both surfaces have already been introduced for this task, novel schemes based on transducers mounted single sided can also be exemplified in combination with advanced electronic schemes providing alignment with respect to the orthogonality of the separated modes. Detail of the developed scheme is exemplified together with experimental results which are compared to the expectations based on established modeling.

Citation Download Citation

K. Hahn, U. Amjad, K. S. Tarar, D. Jha, and W. Grill "Mode selective excitation and detection of Lamb waves", Proc. SPIE 7650, Health Monitoring of Structural and Biological Systems 2010, 76500D (8 April 2010); https://doi.org/10.1117/12.847740

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