Development of an advanced method for expansion due to compression testing

For the purpose of detailed and precise descriptions of pellet-cladding mechanical interaction (PCMI), the advanced EDC test method was developed based on the modification of the conventional EDC test. The employment of ring-shaped specimens together with metallic inner pellet allows to obtain reproducible and less-error experimental results on strains along hoop and axial directions directly. The setup is even capable to be exposed to high temperature experiments which has not yet achieved by the conventional EDC tests. (author)