Modeling of ultrasound transmission through a solid-liquid interface comprising a network of gas pockets
- CEA, DEN, Nuclear Technology Department, F-13108 Saint-Paul-lez-Durance (France)
- Laboratoire de Caracterisation Non Destructive, Universite de la Mediterranee, IUT Aix-en-Provence, Avenue Gaston Berger, 13625 Aix-en-Provence (France)
- CNRS, Aix-Marseille Universite, CINAM-UPR3118, Campus de Luminy, Case 913, 13288 Marseille cedex 09 (France)
Ultrasonic inspection of sodium-cooled fast reactor requires a good acoustic coupling between the transducer and the liquid sodium. Ultrasonic transmission through a solid surface in contact with liquid sodium can be complex due to the presence of microscopic gas pockets entrapped by the surface roughness. Experiments are run using substrates with controlled roughness consisting of a network of holes and a modeling approach is then developed. In this model, a gas pocket stiffness at a partially solid-liquid interface is defined. This stiffness is then used to calculate the transmission coefficient of ultrasound at the entire interface. The gas pocket stiffness has a static, as well as an inertial component, which depends on the ultrasonic frequency and the radiative mass.
- OSTI ID:
- 22036705
- Journal Information:
- Journal of Applied Physics, Vol. 110, Issue 4; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BERYLLIUM COMPLEXES
COMPUTERIZED SIMULATION
COUPLING
FLEXIBILITY
INTERFACES
LIQUIDS
LMFBR TYPE REACTORS
ROUGHNESS
SODIUM
SODIUM COOLED REACTORS
SOLIDS
SUBSTRATES
SURFACES
TRANSDUCERS
ULTRASONIC TESTING
ULTRASONIC WAVES
WAVE PROPAGATION