In the study group "Strength and Lifetimes" of the DKG/DVM (Deutsche Kerami
sche Gesellschaft [German Ceramic Society]/Deutsche Gesellschaft fur Materi
alkunde [German Materials Society]), a Round Robin was applied to dynamic b
ending tests including nine different ceramics. Twenty participants were in
volved. The evaluation was performed on the basis of the median strength va
lues and considering the single data points. Best agreement was found for t
he two procedures. The regression data and the resulting crack growth param
eters are compiled in tables.