Temperature influence on guided waves in a liquid-filled pipe

Author

Hanyin Cui ; Bixing Zhang ; Jianzhong Shen ; Trevelyan, Jon

Author_Institution

State Key Lab. of Acoust., Inst. of Acoust., Beijing, China

fYear

2012

fDate

7-10 Oct. 2012

Firstpage

1

Lastpage

4

Abstract

The varying temperature of liquid sodium is a vital factor affecting the development of a non-destructive evaluation (NDE) ultrasonic technique for health monitoring of sodium-cooled fast reactor (SFR). The main pipe of the secondary loop of SFR is a waveguide in which numerous guided modes exhibit. In this paper, temperature influence on dispersion characteristics of guided waves in a liquid sodium filled pipe model is investigated. It is analyzed that mode coupling between guided modes in a liquid cylinder and in a hollow pipe yields guided modes in a pipe filled with liquid. The aim is to select promising guided modes and suitable excitation frequency ranges, which are non-sensitive to the sodium temperature, low dispersion, and group velocity distinguishable, for NDE application.

Keywords

fission reactor cooling; gas cooled reactors; liquid metal fast breeder reactors; nondestructive testing; SFR; dispersion characteristics; excitation frequency; group velocity; guided waves; hollow pipe; liquid sodium filled pipe model; liquid sodium temperature; nondestructive evaluation; sodium-cooled fast reactor; ultrasonic technique; Dispersion; Equations; Liquids; Mathematical model; Steel; Temperature; Temperature sensors; dispersion; guided wave; temperature influence;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium (IUS), 2012 IEEE International

Conference_Location

Dresden

ISSN

1948-5719

Print_ISBN

978-1-4673-4561-3

Type

conf

DOI

10.1109/ULTSYM.2012.0493

Filename

6562095