Abstract
The objective of this paper is to extend the retrieve function approach of reference 1 to NDE of layered media. A closed-form solution of the incident (reflected) field can be obtained through the convolution of the retrieve function and the transmitted (incident) field. For an N layered medium, the incident field can be obtained by a 2N term summation, while the reflected field can be calculated by a (2N+1-1) term summation. Systematic sensitivity analysis of this technique has been carried out. Experiments were conducted on a three-layered plate, aluminum/water/aluminum, using 1 MHz broad-band transducers. The reconstructed fields compare very well with the measured ones.
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Reference
C. Zhu and V.K. Kinra, “A New Technique for Time-domain Ultrasonic NDE of Thin Plates,” J. of Nondestructive Evaluation (accepted for publication).
I.M. Brekhovskikh, “Waves in Layered Media”, Academic Press (1981).
S.E. Hanneman and V.K. Kinra, “A New Technique for Ultrasonic Nondestructive Evaluation of Adhesive Joints: Part I. Theory,” Experimental Mechanics, Vol. 32(4), pp. 323–331 (1992).
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© 1994 Springer Science+Business Media New York
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Kinra, V.K., Zhu, C. (1994). Ultrasonic NDE of Layered Media Using Time-Domain Information. In: Green, R.E., Kozaczek, K.J., Ruud, C.O. (eds) Nondestructive Characterization of Materials VI. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-2574-5_82
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DOI: https://doi.org/10.1007/978-1-4615-2574-5_82
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4613-6100-8
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