scholarly journals Determination of the hoop fracture properties of unirradiated hydrogen-charged nuclear fuel cladding from ring compression tests

2013 ◽  
Vol 436 (1-3) ◽  
pp. 123-129 ◽  
Author(s):  
M.A. Martin-Rengel ◽  
F.J. Gómez Sánchez ◽  
J. Ruiz-Hervías ◽  
L. Caballero
Keyword(s):  
Nuclear Fuel ◽  
Compression Tests ◽  
Fuel Cladding ◽  
Fracture Properties ◽  
Ring Compression ◽  
Nuclear Fuel Cladding

Failure Criteria for Unirradiated PWR Cladding Subjected to Ring Compression Tests

2015 ◽  
Author(s):  
Jesus Ruiz-Hervias ◽  
Miguel Angel Martin-Rengel ◽  
Francisco Javier Gomez-Sanchez
Keyword(s):  
Radial Direction ◽  
Experimental Testing ◽  
Failure Criteria ◽  
Spent Fuel ◽  
Compression Tests ◽  
Fuel Cladding ◽  
Ring Compression Test ◽  
Ring Compression ◽  
Nuclear Fuel Cladding ◽  
Hydride Reorientation

The ring compression test applied to nuclear fuel cladding is relatively easy to perform but difficult to interpret. It can be representative of the loading state associated to a hypothetical spent fuel assembly drop accident. This is particularly important for spent fuel cladding subjected to drying operations previous to storage and transportation, because they may produce hydride reorientation along the radial direction of cladding. In this paper, experimental testing and numerical simulations are combined to obtain operative failure criteria from the results of the ring compression tests on unirradiated pre-hydrided samples with radial hydrides, simulating drying, storage and subsequent transport conditions.

Structural integrity of hydrided nuclear fuel cladding

2012 ◽  
Vol 1475 ◽  
Author(s):  
Jesús Ruiz-Hervías ◽  
F. Javier Gomez ◽  
Miguel A. Martín-Rengel ◽  
Elena Torres
Keyword(s):  
Nuclear Fuel ◽  
Structural Integrity ◽  
Element Model ◽  
Testing Temperature ◽  
Cohesive Crack ◽  
Crack Model ◽  
Fuel Cladding ◽  
Ring Compression ◽  
Different Temperatures ◽  
Nuclear Fuel Cladding

ABSTRACTThe structural integrity of nuclear fuel cladding is affected by the precipitation of hydrides during operation, which may embrittle the cladding. The aim of this work is to obtain the mechanical and fracture properties of the cladding as a function of the hydrogen content and testing temperature. To this end, the embrittlement caused by circumferential hydrides was simulated on unirradiated fuel cladding samples in the laboratory. The structural integrity of the cladding was assessed at different temperatures (20, 135 and 300ºC), by using the ring compression test. The mechanical properties and the fracture energy were calculated from the experimental load vs. displacement curves, by means of a finite element model which incorporates the cohesive crack model.

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