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Proceedings Paper

Parametric studies on attenuation of cylindrical guided waves
Author(s): Won-Bae Na; Jeong-Tae Kim; Juwon Lee; Dong-Soo Hong
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Paper Abstract

Guided wave techniques have been used for pipeline inspection because of their long-range inspection capability. One of main concerns of these techniques is how ones decide axial interval of sensors. This question is related to the characteristics of attenuation of cylindrical guided waves. Parametric density concept is proposed for a long-range pipeline inspection. This concept is designed to obtain the attenuation of ultrasonic guided waves propagating in underwater pipeline without complicated calculation of attenuation dispersion curves. For this study, three pipe materials are considered, then different transporting fluids are assumed, and four different pipe geometries are adopted. It is shown that the attenuation values based on the parametric density concept reasonably match with the attenuation values obtained from the dispersion curves. However, it seems that the parametric concept is only applicable for fluid-filled underwater pipes. The limitations of the parametric density concept are also discussed.

Paper Details

Date Published: 11 April 2007
PDF: 8 pages
Proc. SPIE 6532, Health Monitoring of Structural and Biological Systems 2007, 65320J (11 April 2007); doi: 10.1117/12.715413
Show Author Affiliations
Won-Bae Na, Pukyong National Univ. (South Korea)
Jeong-Tae Kim, Pukyong National Univ. (South Korea)
Juwon Lee, Pukyong National Univ. (South Korea)
Dong-Soo Hong, Pukyong National Univ. (South Korea)

Published in SPIE Proceedings Vol. 6532:
Health Monitoring of Structural and Biological Systems 2007
Tribikram Kundu, Editor(s)

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