Mechanical characterization of irradiated fuel materials with local ultrasonic methods
Since 1996, this project has been focused on the local assessment of mechanical properties of non-irradiated and irradiated fuels with micro-acoustic and micro-indentation methods. In 1999, a study by acoustic microscopy concerning the influence of volume fraction porosity (in the range 1 to 7 %) on the elastic properties of non-irradiated fuel has been performed. Other measurements on non-stochiometric samples containing Erbium and Cerium, and on irradiated pellets have proved all the potentiality of the micro-acoustic approach. This paper deals first with a resume of the micro-acoustic activities and with the improvement of the experimental ultrasonic device recently introduced in a hot cell of the Institute for Transuranium Elements of Karlsruhe in order to get more local characterization and/or to operate on tiny samples. Secondly, measurements on very porous samples, including simulated fuels and irradiated UO(2) pellets, are presented and discussed.
Bibliographic Reference: An oral report given at: The 7th International Conference on CANDU Fuel. Held in: Kingston, Ontario (CA), 23-27 September 2001
Record Number: 200114150 / Last updated on: 2001-12-21
Original language: en
Available languages: en