학술논문
Investigation of Goubau Wave Propagation on Large Pipes for Sensing Applications.
Document Type
Article
Source
Subject
*ACOUSTIC surface waves
*PIPE
*RADIATION
*ENERGY dissipation
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Language
ISSN
1424-8220
Abstract
We examine the application of guided waves on a single conductor (Goubau waves) for sensing. In particular, the use of such waves to remotely interrogate surface acoustic wave (SAW) sensors mounted on large-radius conductors (pipes) is considered. Experimental results using a small-radius (0.0032 m) conductor at 435 MHz are reported. The applicability of published theory to conductors of large radius is examined. Finite element simulations are then used to study the propagation and launching of Goubau waves on steel conductors up to 0.254 m in radius. Simulations show that waves can be launched and received, although energy loss into radiating waves is a problem with current launcher designs. [ABSTRACT FROM AUTHOR]