Paper Title:
Enhancement of Flaw Detectability Using Time Reversal Techniques
  Abstract

Ultrasonic phased array inspection has been paid a great attention in ultrasonic nondestructive evaluation since it can provide a benefit of focusing and/or steering ultrasonic beams. A time reversal technique is claimed to be very robust to focus beams through inhomogeneous media, using the phased array transducers. In this paper, the performance and limitations of a D.O.R.T. method, which is one of the time reversal techniques, is considered based on the experimental studies. In addition, a variation of the D.O.R.T, namely a pre-focused D.O.R.T., is proposed in order to overcome the limitations of the current D.O.R.T. method. The results of the newly proposed method are compared to those obtained by conventional focusing methods.

  Info
Periodical
Solid State Phenomena (Volume 120)
Edited by
Young-Jin Kim
Pages
113-118
DOI
10.4028/www.scientific.net/SSP.120.113
Citation
H. J. Kim, R. B. Thompson, S. J. Song, "Enhancement of Flaw Detectability Using Time Reversal Techniques", Solid State Phenomena, Vol. 120, pp. 113-118, 2007
Online since
February 2007
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Price
$32.00
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