Browse > Article

The characteristics of Lamb waves in a composite plate with thickness variation  

Han Jeongho (한국과학기술원 항공우주공학과)
Kim Chun-Gon (한국과학기술원 항공우주공학과)
Publication Information
Composites Research / v.18, no.2, 2005 , pp. 46-51 More about this Journal
Abstract
An active inspection system using Lamb waves for structural health monitoring was considered in this paper. In order to understand the characteristics of the Lamb waves propagating in a composite plate, the experiment was performed for a quasi-isotropic composite plate with thickness variation. Lamb waves were generated and received by the thin PZT transducers bonded on the surface. In this test, a simple new technique was tried for characterizing the Lamb waves propagating across the discontinuity due to the thickness variation. The results showed that Lamb waves were more sensitive to the thinner plate with faster group velocity and that the thickness change in composite plate was detectable. Consequently, the potential of applying this technique to structural health monitoring was verified.
Keywords
구조건전성모니터링;램파;복합재료;능동검사시스템;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Kessler, S., Spearing, S., 'In-Situ Sensor-Based Damage Detection of Composite Materials for Structural Health Monitoring,' AIAA-2002-1545
2 N. Tiyama, J. Takatsubo, 'Lamb wave method for quick inspection of impact-induced delamination in composite laminates,' Composites Science and Technology, Vol. 64, 2004
3 Francesco Lanza di Scalea, et. al., 'Propagation of ultrasonic guided waves in lap-shear adhesive joints: Case of incident a0 Lamb wave,' J. Acoust. Soc. Am., Vol. 115, 2004, pp. 146-156   DOI   ScienceOn
4 David N. Alleyne, Peter Cawlley, 'The Interaction of Lamb Waves with Defects,' IEEE Transaction on ultrasonics, ferroelectrics, and frequency control. Vol. 39, No.3, 1992, pp. 381-397   DOI   ScienceOn
5 Gandhi, M.V., Thompson, B.S., 'Smart Materials and Structures,' Chapman & Hall, London, 1992
6 J. Rose, 'Ultrasonic Waves in Solid Media,' Cambridge University Press, 1999
7 Spillman Jr. WB, Sirkis JS, Gardiner PT., 'Smart materials and structures; what are they?,' Smart Material and Structures, Vol. 5, No.3, 1996, pp. 247-254   DOI   ScienceOn
8 Y.L.Koh, W.K. Chiu, N.Rajic, 'Integrity assessment of composite repair patch using propagating Lamb waves,' Composite Structures. Vol. 58, 2002, pp. 363-371   DOI   ScienceOn
9 P.D. Wilcox, M.J.S. Lowe and P. Cawley, 'Mode and Transducer Selection for Long Range Lamb Wave Inspection,' J. of Intelligent Material Systems and Structures. Vol. 12, 2001, pp. 553-565   DOI   ScienceOn
10 S. Grondel, et. al., 'Health monitoring of a composite wingbox structure,' Ultrasonics, 2004, in process