Abstract
A chirp focused phased array B-scan imaging system has been employed to obtain cross sectional images in metals. Good quality images with a field of view of 5–20 cm × 5 cm of arrays of holes have been observed using shear waves, Rayleigh waves, Lamb waves, and flexural waves in thin sheets of metal. With 2.5 MHz Rayleigh waves, we have detected and located surface flaws as small as 250 μm deep and 1000 μm diameter.
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References
C. S. Kino, C. DeSilets, -J. Fraser, and T. Waugh, New Acoustic Imaging Systems for Non-Destructive Testing, IEEE Ultrasonics Symposium Proceedings, 1975, pp. 91–101.
J. Fraser, J. Havlice, G. S. Kino, W. Leung, H. J. Shaw, K. Toda, T. Waugh, D. K. Winslow, and L. T. Zitelli, ‘TA Two Dimensional Electronically Focused Imaging System» IEEE Ultrasonics Symposium Proceedings, 1974, pp. 19–25.
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T. M. Waugh, G. S. Kino, C. DeSilets, and J. Fraser, “Acoustic Imaging Techniques for Nondestructive Testing,” IEEE Transactions on Sonics and Ultrasonics, to be published (Sept. 1976).
J. Souquet, G. S. Kino, and T. Waugh, “Chirp Focused Transmitter Theory,” to be published in Acoustical Holography (1976).
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© 1977 Springer Science+Business Media New York
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Waugh, T.M., Kino, G.S. (1977). Real Time Imaging with Shear Waves and Surface Waves. In: Kessler, L.W. (eds) Acoustical Holography. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-0653-6_8
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DOI: https://doi.org/10.1007/978-1-4757-0653-6_8
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4757-0655-0
Online ISBN: 978-1-4757-0653-6
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