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Appl. Sci. 2019, 9(2), 249; https://doi.org/10.3390/app9020249

Interface Characterization within a Nuclear Fuel Plate

Measurement Sciences, Idaho National Laboratory, Idaho Falls, ID 83402, USA
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Received: 30 November 2018 / Revised: 21 December 2018 / Accepted: 21 December 2018 / Published: 11 January 2019
(This article belongs to the Special Issue Damage Inspection of Composite Structures)
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Abstract

To predict the performance of nuclear fuels and materials, irradiated fuel plates must be characterized efficiently and accurately in highly radioactive environments. The characterization must take place remotely and work in settings largely inhospitable to modern digital instrumentation. Characterization techniques based on non-contacting laser sensing methods enable remote operation in a robust manner within a hot-cell environment. Laser characterization instrumentation can offer high spatial resolution and remain effective for scanning large areas. A laser shock (LS) system is currently being developed as a post-irradiation examination (PIE) technique in the hot fuel examination facility (HFEF) at the Idaho National Laboratory (INL). The laser shock technique will characterize material properties and failure loads/mechanisms in various composite components and materials such as plate fuel and next-generation fuel forms in high radiation areas. The laser shock-technique induces large amplitude shock waves to mechanically characterize interfaces such as the fuel–clad bond. As part of the laser shock system, a laser-based ultrasonic C-scan system will be used to detect and characterize debonding caused by the application of the laser shock. The laser shock system has been used to characterize the resulting bond strength within plate fuels which have been fabricated using different fabrication processes. The results of this study will be to select the fabrication process that provides the strongest interface. View Full-Text
Keywords: laser shock; laser ultrasonic NDE; sensor; nuclear fuel plate laser shock; laser ultrasonic NDE; sensor; nuclear fuel plate
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Smith, J.; Scott, C.; Benefiel, B.; Rabin, B. Interface Characterization within a Nuclear Fuel Plate. Appl. Sci. 2019, 9, 249.

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