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Open AccessArticle

2D Ultrasonic Antenna System for Imaging in Liquid Sodium

1
French Alternative Energies and Nuclear Energy Commission—Laboratory for Integration of Systems and Technology CEA-LIST, 91191 Gif-sur-Yevtte Cedex, France
2
French Alternative Energies and Nuclear Energy Commission—Division of Nuclear Energy CEA-DEN, 13108 Saint-Paul-lez-Durance Cedex, France
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Author to whom correspondence should be addressed.
Sensors 2019, 19(19), 4334; https://doi.org/10.3390/s19194334
Received: 30 August 2019 / Revised: 2 October 2019 / Accepted: 3 October 2019 / Published: 8 October 2019
(This article belongs to the Special Issue Sensors for Ultrasonic NDT in Harsh Environments)
Ultrasonic techniques are developed at CEA (French Alternative Energies and Nuclear Energy Commission) for in-service inspection of sodium-cooled reactors (SFRs). Among them, an ultrasound imaging system made up of two orthogonal antennas and originally based on an underwater imaging system is studied for long-distance vision in the liquid sodium of the reactor’s primary circuit. After a description of the imaging principle of this system, some results of a simulation study performed with the software CIVA in order to optimize the antenna parameters are presented. Then, experimental measurements carried out in a water tank illustrate the system capabilities. Finally, the limitations of the imaging performances and the ongoing search of solutions to address them are discussed. View Full-Text
Keywords: SFR; in-service inspection; imaging; ultrasonic transducer; NDT (Non Destructive Testing); NDE (Non Destructive Evaluation) SFR; in-service inspection; imaging; ultrasonic transducer; NDT (Non Destructive Testing); NDE (Non Destructive Evaluation)
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Le Jeune, L.; Raillon, R.; Toullelan, G.; Baqué, F.; Taupin, L. 2D Ultrasonic Antenna System for Imaging in Liquid Sodium. Sensors 2019, 19, 4334.

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