Time Reversal Technique for Ultrasonic Guided Wave Inspection

Abstract:

Article Preview

For the long range inspection of structures in nuclear power plant using array transducers, it is necessary to focus waves on defects under interrogation. To take care of such a need, in this study we adopt a time reversal technique that is claimed to be very robust to focus ultrasonic waves on defects. Specifically, we calculate the appropriate time delay using the time reversal technique and re-generate ultrasonic guided waves that are focusing to an interrogated defect with the calculated time delay. In this paper, we describe the principle of the time reversal technique briefly and present the performance enhancement obtained by the time reversal techniques.

Info:

Periodical:

Key Engineering Materials (Volumes 321-323)

Edited by:

Seung-Seok Lee, Joon Hyun Lee, Ik Keun Park, Sung-Jin Song, Man Yong Choi

Pages:

776-779

DOI:

10.4028/www.scientific.net/KEM.321-323.776

Citation:

H. J. Kim et al., "Time Reversal Technique for Ultrasonic Guided Wave Inspection", Key Engineering Materials, Vols. 321-323, pp. 776-779, 2006

Online since:

October 2006

Export:

Price:

$35.00

[1] M. Fink: IEEE Trans. Ultrason. Ferroelectr. Freq. Control, Vol. 39 (1992), p.555.

[2] N. Chakroun, M. Fink and F. Wu: IEEE Trans. Ultrason. Ferroelectr. Freq. Control, Vol. 42 (1995), p.1087.

[3] C. Prada and M. Fink: Journal of Acoust. Soc. Am., Vol. 104 (1998), p.801.

[4] C. Prada, S. Manneville, D. Spoliansky and M. Fink: Journal of Acoust. Soc. Am., Vol. 99 (1996), p. (2067).

[5] N. Mordant, C. Prada, and M. Fink: Journal of Acoust. Soc. Am., Vol. 105 (1999), p.2634.

[6] C. Prada and M. Fink: Wave Motion, Vol. 20 (1994) p.151.

[7] J. L. Rose: Ultrasonic Waves in Solid Media (Cambridge University Press, USA, (1999).

In order to see related information, you need to Login.