Investigation of Goubau Wave Propagation on Large Pipes for Sensing Applications

Autor:	David W. Greve, Jagannath Devkota, Paul R. Ohodnicki, Ruishu Wright
Jazyk:	angličtina
Rok vydání:	2023
Předmět:	Goubau surface acoustic wave sensing launcher wave propagation Chemical technology TP1-1185
Zdroj:	Sensors, Vol 23, Iss 11, p 4991 (2023)
Druh dokumentu:	article
ISSN:	23114991 1424-8220
DOI:	10.3390/s23114991
Popis:	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.
Databáze:	Directory of Open Access Journals
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