Ultrasonic Leaky Waves for Nondestructive Interface Characterization
There has been a great deal of emphasis recently in the development of composite materials, specifically metal and ceramic matrix composites. These types of composite materials offer the advantages of being lighter, stiffer, stronger, and more resistant to creep and corrosion. However, because of the physical and chemical differences of the matrix and reinforcing agents the interface is plagued by chemical reactions and a high level of residual stress. This impedes the ability of the interface to bear and transfer load and results in fracture upon subsequent stress. Thus, the need for nondestructive characterization of interfaces is critical to the development of these high technology composite materials.
KeywordsLongitudinal Wave Rayleigh Wave Mode Conversion Ceramic Matrix Composite Leaky Mode
Unable to display preview. Download preview PDF.
- 2.Sezawa, K., Kanai, K., The Range of Existence of Stoneley-waves and Some Related Problems, Bull. Earthquake Res. Inst., 17:1 (1939).Google Scholar
- 4.Owen, T. E., Surface Wave Phenomena in Ultrasonics, Proa. Appl. Mater. Res. 6:69 (1964).Google Scholar
- 5.Yamaguchi, R., Sato, Y., Stoneley Wave-Its Velocity, Orbit and the Distribution of Amplitude, Bull. Res. Earthquake Inst., 33:549 (1955).Google Scholar
- 6.Hsieh, T. M., Rosen, M., Lindgren, E. L., The Effect of Interfacial Properties on Stonely Wave Propagation, Ultrasonics, (in press 1990).Google Scholar
- 8.Krasicka, E., Simmons, J., Propagation and Dispersion of Radial-Axial Leaky Modes in Infinitely Clad Rods, to be published.Google Scholar
- 9.Computer models were developed by Dr. John Simmons and Dr. Eva Krasicka of NIST.Google Scholar