Biaxial dynamic testing of nuclear containment steel
In order to investigate the behaviour of a large steel containment for nuclear reactors under severe loadings, a test programme on behalf of ANPA-DISP has been initiated at the laboratories of the JRC Ispra. Combined effects of high strain rates and biaxial stresses are addressed, with the purpose of assessing the material behaviour up to rupture in the special conditions which are produced during an explosion or a missile impact. Deformation based failure criteria, as in the literature, will be checked during the campaign. In this paper the main features of the experimental programme are discussed in detail. Special consideration is given to: (i) the design and the assessment experiment of the cruciform biaxial specimen, which should develop the instabilities leading to fracture in the central gauge part of the specimen without the effects of load carrying members constraints; (ii) the design of the testing apparatus, in particular of the biaxial Hopkinson bar for testing biaxial cruciform specimens taking into account wave propagation effects; (iii) the experimental data analysis procedure based on a preliminary critical study of some ductile fracture criteria, in particular that of Kochonen.
Bibliographic Reference: Paper presented: SMIRT 13, Porto Alegre (BR), August 13-18, 1995
Availability: Available from (1) as Paper EN 39004 ORA
Record Number: 199510736 / Last updated on: 1995-07-07
Original language: en
Available languages: en