Ray synthesis of the form function for backscattering from an elastic spherical shell: Leaky Lamb waves and longitudinal resonances

1991 ◽  
Vol 89 (6) ◽  
pp. 2545-2558 ◽  
Author(s):  
Steven G. Kargl ◽  
Philip L. Marston
Keyword(s):  
Spherical Shell ◽  
Lamb Waves ◽  
Elastic Spherical Shell ◽  
Form Function ◽  
Leaky Lamb Waves

Laser-induced thermoelastic Leaky Lamb waves at the fluid–solid interface

2011 ◽  
Vol 105 (2) ◽  
pp. 379-386 ◽  
Author(s):  
Chen Guang Xu ◽  
Bai Qiang Xu ◽  
Gui Dong Xu
Keyword(s):  
Lamb Waves ◽  
Solid Interface ◽  
Leaky Lamb Waves

scholarly journals Study of Lamb Waves for Non-Destructive Testing Behind Screens

2018 ◽  
Vol 170 ◽  
pp. 03005 ◽  
Author(s):  
P. Kauffmann ◽  
M.-A. Ploix ◽  
J.-F. Chaix ◽  
C. Gueudré ◽  
G. Corneloup ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Lamb Waves ◽  
Nuclear Industry ◽  
Liquid Sodium ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Leaky Lamb Waves ◽  
Short Time ◽  
And Control ◽  
Non Destructive

The inspection and control of sodium-cooled fast reactors (SFR) is a major issue for the nuclear industry. Ultrasonic solutions are under study because of the opacity of liquid sodium. In this paper, the use of leaky Lamb waves is considered for non-destructive testing (NDT) on parallel and immersed structures assimilated as plates. The first phase of our approach involved studying the propagation properties of leaky Lamb waves. Equations that model the propagation of Lamb waves in an immersed plate were solved numerically. The phase velocity can be experimentally measured using a two dimensional Fourier transform. The group velocity can be experimentally measured using a short-time Fourier transform technique. Attenuation of leaky Lamb waves is mostly due to the re-emission of energy into the surrounding fluid, and it can be measured by these two techniques.

NDE OF COMPOSITES USING LEAKY LAMB WAVES (LLW)

2001 ◽  
Vol 17 (2) ◽  
pp. 91-119 ◽  
Author(s):  
YOSEPH BAR-COHEN ◽  
SHYH-SHIUH LIH ◽  
AJIT K. MAL
Keyword(s):  
Lamb Waves ◽  
Leaky Lamb Waves
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