It is well known that the process of heating and then cooling dissimilar materials introduces considerable stress at and near the interface. In this article, first, the surface wave velocity distributions obtained with the curve technique were found to compare well with residual stress distribution measured by the finely collimated X-ray diffraction technique. Second, a delamination was introduced at the interface. The curve technique was then used again to measure the surface acoustic wave velocity along the interface. The defective specimens showed significantly different patterns of surface acoustic wave velocities. Thus, this study presents useful guidelines in discriminating between sound and defective ceramic/metal joints by scanning acoustic microscopy.
Characterization of Stress at a Ceramic/Metal Joined Interface by the Technique of Scanning Acoustic Microscopy
Contributed by the Pressure Vessels and Piping Division and presented at the Pressure Vessels and Piping Conference, Atlanta, Georgia, July 22–26, 2001, of The American Society of Mechanical Engineers. Manuscript received by the PVP Division, March 22, 2001; revised manuscript received March 29, 2002. Associate Editor: S. Y. Zamrik.
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Miyasaka, C., Tittmann, B. R., and Tanaka, S. (July 26, 2002). "Characterization of Stress at a Ceramic/Metal Joined Interface by the Technique of Scanning Acoustic Microscopy ." ASME. J. Pressure Vessel Technol. August 2002; 124(3): 336–342. https://doi.org/10.1115/1.1480824
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