Assessment of Fuel Cladding Integrity by the Segmented Expanding MANDREL (SEM) Test

This paper presents the segmented expanding mandrel test as a materials characterization test as well as a test to simulate pellet cladding interaction. It is shown that the test can be used to derive stress-strain curves at moderate plastic deformation provided the friction coefficients are low and known. The pellet–cladding can be simulated by selecting representative friction coefficients and segments to represent cracked fuel. The test used limited amount of material and it is simple to perform. In particular the test can be used quantify how defects assess the ductility of thin-walled cladding tubes.

NILSSON Karl-Fredrik;  NEGYESI Martin; 

2012-03-30

IASMiRT

JRC66421

https://publications.jrc.ec.europa.eu/repository/handle/JRC66421,