JRC88899

Abstract

A brief review of the technological advances of the Hopkinson bar technique in tension for the study of irradiated/non-irradiated nuclear materials and the development of this technology for large specimens is presented. Comparisons are made of the dynamic behaviour of non-irradiated and irradiated materials previously subjected to creep, low cycle fatigue and irradiation (2, 10 and 30 displacements per atom). Inparticular, complete results of the effect of irradiation on the dynamic mechanical properties of AISI304L steel, tested at 20, 400 and 550◦C are presented. These high strain rate tests have been performed with a modified Hopkinson bar (MHB), installed inside a hot cell. Examples of testing large nuclear steel specimens with a very large Hopkinson bar are also shown. The results overall demonstrate the capability of the MHB to efficiently reproduce the material stress conditions in case of accidental internal and external dynamic loadings in nuclear reactors, thus contributing to the important process of their structural assessment.

Authors

ALBERTINI Carlo; CADONI Ezio; SOLOMOS George

Year

2014

Publisher

ROYAL SOC

Citation

Albertini C, Cadoni E, Solomos G. Advances in the Hopkinson bar testing of irradiated/non-irradiated nuclear materials and large specimens. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES 372 (2015); 2014. p. 20130197. JRC88899

Identifiers

JRC	JRC88899
ISSN	1364-503X
DOI	10.1098/rsta.2013.0197

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