DETERMINATION OF CRACK INITIATION AND CRACK RESISTANCE USING COMPACT SPECIMENS, AND COMPARISON WITH RESULTS OF NUMERICAL-SIMULATION OF DYNAMICALLY LOADED WIDE PLATES
K. Kussmaul et al., DETERMINATION OF CRACK INITIATION AND CRACK RESISTANCE USING COMPACT SPECIMENS, AND COMPARISON WITH RESULTS OF NUMERICAL-SIMULATION OF DYNAMICALLY LOADED WIDE PLATES, Nuclear Engineering and Design, 151(2-3), 1994, pp. 489-502
Static and dynamic crack resistance curves for the ferritic steel 20 M
nMoNi 5 5 and the austenitic steel X6 CrNi 18 11 were determined for c
ompact tension specimens, using a modified key curve method which cont
ains a numerical calculation of the key curves. The method is describe
d and verified under quasi-static loading. The J integral evluation ac
cording to the ASTM standard (which at present is only applicable for
ferritic steels under quasi-static loading) did not show in any case a
considerable difference compared with the energy release rate approac
h. The numerical simulation of tests was carried out for wide plates m
ade of austenitic material on the 12 MN high speed tensile testing mac
hine at MPA Stuttgart.