Paper Title:
A Study on the Behavior of Ultrasonic Guided Wave Mode in a Pipe Using a Comb Transducer
  Abstract

A preliminary study of the behavior of ultrasonic guided wave mode in a pipe using a comb transducer for maintenance inspection of power plant facilities has been verified experimentally. Guided wave mode identification is carried out in a pipe using time-frequency analysis methods such as wavelet transform (WT) and short time Fourier transform (STFT), compared with theoretically calculated group velocity dispersion curves for longitudinal and flexural mode. The results are in good agreement with analytical predictions and show the effectiveness of using the time-frequency analysis method to identify the individual guided wave modes. And, It was found out that longitudinal mode (0, 1) is affected by mode conversion less than the other modes. Therefore, L (0, 1) is selected as a optimal mode for evaluating location of the surface defect in a pipe.

  Info
Periodical
Key Engineering Materials (Volumes 297-300)
Edited by
Young-Jin Kim, Dong-Ho Bae and Yun-Jae Kim
Pages
2182-2186
DOI
10.4028/www.scientific.net/KEM.297-300.2182
Citation
I. K. Park, Y. K. Kim, Y. H. Cho, W. J. Song, Y. S. Ahn, Y. S. Cho, G. J. Jung, "A Study on the Behavior of Ultrasonic Guided Wave Mode in a Pipe Using a Comb Transducer ", Key Engineering Materials, Vols. 297-300, pp. 2182-2186, 2005
Online since
November 2005
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Price
$32.00
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