Browse > Article

Quantitative Estimation of Transmitted and Reflected Lamb Waves at Discontinuity  

Lim, Hyung-Jin (The Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology)
Sohn, Hoon (The Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology)
Publication Information
Journal of the Korean Society for Nondestructive Testing / v.30, no.4, 2010 , pp. 359-366 More about this Journal
Abstract
For the application of Lamb wave to structural health monitoring(SHM), understanding its physical characteristic and interaction between Lamb wave and defect of the host structure is an important issue. In this study, reflected, transmitted and mode converted Lamb waves at discontinuity of a plate structure were simulated and the amplitude ratios are calculated theoretically using Modal decomposition method. The predicted results were verified comparing with finite element method(FEM) and experimental results simulating attached PZTs. The result shows that the theoretical prediction is close to the FEM and the experimental verification. Moreover, quantitative estimation method was suggested using amplitude ratio of Lamb wave at discontinuity.
Keywords
Lamb Wave; Structural Health Monitoring; PZT; Finite Element Method; Modal Decomposition;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 P. Kudela and W. Ostachowicsz, "A multilayer composite beam and plate elements: Reflected of Lamb waves at delamination," Mechanics of Advanced Materials and Structures, Vol. 16, No.3, pp. 174-187 (2009)   DOI   ScienceOn
2 S. B. Kim and H. Sohn, "Instantaneous reference-free crack detection based on polarization characteristics of piezoelectric materials," Smart Materials and Structures, Vol. 16, pp. 2375-2387 (2007)   DOI   ScienceOn
3 J. L. Rose, Ultrasonic Waves in Solid Media, Cambridge Univ. Press (1999)
4 Y. Cho, "Estimation of ultrasonic guided wave mode conversion in a plate with thickness variation," IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, Vol. 47, No.3, pp. 591-603 (2000)   DOI   ScienceOn
5 F. Benmeddour, S. Grondel, J. Assaad and E. Moulin, "Study of fundamental Lamb modes interaction with symmetrical notches," NDT&E International, Vol. 41, pp. 330-340 (2008)   DOI   ScienceOn
6 V. Giurgiutiu, Structural Health Monitoring with Piezoelectric Wafer Active Sensor, Elsevier Inc. (2008)
7 H. J. Jeong and M. C. Park, "Finite element simulation of laser-generated ultrasound and interaction with surface breaking cracks," Journal of the Korean Society for Nondestructive Testing, Vol. 24, No.3, pp . 259-267 (2004)   과학기술학회마을
8 H. J. Jeong, T. H. Kim, S. S. Lee and Y. G. Kim, "Finite element modeling of wall thinning defects: applications to Lamb wave generation and interaction," Journal of the Korean Society for Nondestructive Testing, Vol. 28, No.2, pp. 199-204 (2008)   과학기술학회마을
9 B. Morvan, N. Wilkie-ChancelIier, H. Duflo, A. Tinel and J. Duclos, "Lamb wave reflection at the edge of a plate," J. Acoust. Soc. Am., Vol. 113, No.3, pp. 1417-1425 (2003)   DOI   ScienceOn
10 F. Benmeddour, S. Grondel, J. Assaad and E. Moulin, "Study of fundamental Lamb modes interaction with symmetrical notches," NDT&E International, Vol. 41, pp. 1-9 (2008)   DOI   ScienceOn
11 M. Castaings, E. L. Clezio and B. Hosten, "Modal decomposition method for modeling the interaction of Lamb waves with cracks," J. Acoust. Soc. Am, Vol. 112, No. 6, pp. 2567-2582 (2002)   DOI   ScienceOn