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dc.contributor.authorMARCHETTI MARAen_GB
dc.contributor.authorLAUX Didieren_GB
dc.contributor.authorCAPPIA FABIOLAen_GB
dc.contributor.authorLAURIE Mathiasen_GB
dc.contributor.authorVAN UFFELEN Paulen_GB
dc.contributor.authorRONDINELLA Vincenzoen_GB
dc.contributor.authorDESPAUX Gillesen_GB
dc.date.accessioned2017-01-18T01:45:26Z-
dc.date.available2017-01-16en_GB
dc.date.available2017-01-18T01:45:26Z-
dc.date.created2017-01-03en_GB
dc.date.issued2016en_GB
dc.date.submitted2016-12-06en_GB
dc.identifier.isbn978-1-4799-9918-7en_GB
dc.identifier.urihttp://ieeexplore.ieee.org/document/7465598/en_GB
dc.identifier.urihttp://publications.jrc.ec.europa.eu/repository/handle/JRC104632-
dc.description.abstractDuring irradiation UO2 nuclear fuel experiences the development of a non-uniform distribution of porosity which contributes to establish varying mechanical properties along the radius of the pellet. Radial variations of the porosity and of elastic properties in high burnup UO2 pellet can be investigated via high frequency acoustic microscopy. Ultrasound waves are generated by a piezoeletric transducer and focused on the sample, after having travelled through a coupling liquid. The elastic properties of the material are related to the velocity of the generated Rayleigh surface wave (VR). A 67 MWd/kgU UO2 pellet was characterized using the acoustic microscope installed in the hot cells of the Institute of Transuranium Elements: 90 MHz frequency was applied, methanol was used as coupling liquid and VR was measured at different radial positions. By comparing the porosity values obtained via acoustic microscopy with those determined using ceramographic image analysis a good agreement was found, especially in the areas close to the centre. In addition Young's modulus was calculated and its radial profile was correlated to the corresponding burnup profile.en_GB
dc.description.sponsorshipJRC.G.III.8-Waste Managementen_GB
dc.format.mediumOnlineen_GB
dc.languageENGen_GB
dc.publisherIEEEen_GB
dc.relation.ispartofseriesJRC104632en_GB
dc.titleHigh frequency acoustic microscopy for the determination of porosity and Young’s modulus in high burnup uranium dioxide nuclear fuelen_GB
dc.typeArticles in periodicals and booksen_GB
dc.identifier.doi10.1109/ANIMMA.2015.7465598en_GB
JRC Directorate:Nuclear Safety and Security

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