Abstract
It is well known that layered solids can support dispersive, layer guided waves whose propagation characteristics are strongly dependent upon the material properties of the solids. Thus, accurate measurements of the propagation characteristics of guided waves can lead to the development of excellent nondestructive evaluation tools for coated solids, composite laminates and other electronic as well as structural materials which are being used with increasing frequency in modern engineering applications. Two recently developed experimental arrangements [1,2] which provide the means for such measurements are sketched in Figure 1. In the arrangement shown in Figure la, the platelike specimen is fully immersed in a fluid, while in that shown in Figure 1b, the fluid is present on only one side of the specimen. In both cases, a beam of acoustic waves is launched at a specific angle of incidence and the reflected acoustic field is recorded by a symmetrically placed second transducer. The recorded signals in both experiments consist of the spatially reflected waves and for sufficiently large angles of incidence, leaky waves radiated by the layer guided waves in the solid. After appropriate signal processing to remove the noise and Fourier analysis, the spectrum of the total reflected field is obtained.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
Y. Bar-Cohen and D.E. Chimenti, 2nd Int’l. Symposium on Nondestructive Characterization of Materials, Montreal, Canada, 21–23 July (1986) Douglas Paper #7681.
Y. Bar-Cohen, Solid Mechanics Reserach for QNDB, J.D. Achenbach and Y. Rajapakse (eds.) Martinus Nijhoff Publishers, Boston (1987) pp. 187–201.
K. Aki and P. Richards, Quantitative Seismology, Theory and Methods, (Freeman, San Francisco, 1980).
T. Kundu, A.K. Mal and R.D. Weglein, J. Acoust. Soc. Am., 77 pp. 353–361 (1985).
T. Kundu and A.K. Mal, Int. J. Engr. Sc., 24, pp. 1819–1829 (1986).
J.W. Dunkin, Bull. Seism. Soc. Am. 55, pp. 335–358 (1965).
T. Kundu and A.K. Mal, Wave Motion, 7, pp. 459–471 (1985).
A.K. Mal and R. Weglein, Review of Progress in Quantitative NDE, edited by D.O. Thompson and D.E. Chimenti (Plenum Press, NY, 1987).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1988 Plenum Press, New York
About this chapter
Cite this chapter
Mal, A.K., Yin, CC., Bar-Cohen, Y. (1988). The Influence of Material Dissipation and Imperfect Bonding on Acoustic Wave Reflection from Layered Solids. In: Thompson, D.O., Chimenti, D.E. (eds) Review of Progress in Quantitative Nondestructive Evaluation. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-0979-6_6
Download citation
DOI: https://doi.org/10.1007/978-1-4613-0979-6_6
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4612-8275-4
Online ISBN: 978-1-4613-0979-6
eBook Packages: Springer Book Archive