Expansion Due To Compression Tests With Rapid Heating Rate For RIA Situations
| Autor: | Zouari, A, Bono, M, Le Boulch, D, Le Jolu, T, Besson, Jacques, Crepin, Jérôme |
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| Přispěvatelé: | Centre des Matériaux (MAT), MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Service d'Etudes des Matériaux Irradiés (SEMI), Département des Matériaux pour le Nucléaire (DMN), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centre des Matériaux (CDM), Mines Paris - PSL (École nationale supérieure des mines de Paris) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Society for Experimantal Mechanics (SEM ) Society for Experimantal Mechanics (SEM ), Jun 2019, Reno, United States |
| Popis: | International audience; This paper presents an assessment of the thermo-mechanical behavior of non-irradiated Cold-Worked Stress Relieved (CWSR) Zircaloy-4 nuclear fuel cladding, the first of the three containment barriers for the radioactive matter, under thermo-mechanical loading conditions representative of the first phase of a Reactivity Initiated Accident (RIA) in a nuclear power reactor. During this type of accident, the zirconium alloy fuel cladding tubes may be subjected to Pellet-Cladding Mechanical Interaction (PCMI) due to the thermal expansion of the pellet. Experimental data from past research reactor programs simulating RIAs have shown that the cladding experiences a strain rate of more than 1 s-1 , a heating rate of up to 1000 °C.s-1 , and a variable multiaxial load path. In this study, different kinds of Expansion Due to Compression (EDC) tests with varying strain biaxiality (εzz/εθθ) conditions have been performed in order to study the evolution of the hoop strain at failure. The cladding was heated by a Joule effect heating method in order to produce heating rates greater than 150 °C.s-1. The heating method consists of passing an electric current through a heating element inside a ductile metallic pellet, which in turn is inserted inside the cladding. The electric current heats the pellet, which then heats the cladding via conduction. Once the temperature of the cladding reaches 500°C, the heating element and the pellet are compressed by two rigid pistons. As the pellet is compressed and expands in diameter, a hoop strain is imposed on the cladding specimen. To vary the biaxiality, the ends of the sample are either free or fixed. During the tests, the strain field in the sample is measured using a Digital Image Correlation (DIC) technique, and the temperature field is characterized using a thermal camera and thermocouples. |
| Databáze: | OpenAIRE |
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