TY - JOUR
T1 - Weakest-link failure prediction for ceramics IV : application of mixed-mode fracture criteria for multiaxial loading
AU - Dortmans, L.J.M.G.
AU - With, de, G.
PY - 1992
Y1 - 1992
N2 - Strength data obtained from uniaxial and biaxial bend tests on 2 alumina ceramics were analyzed by a weakest-link model with different mixed-mode fracture criteria and crack shapes. Taking the data from 3- and 4-point bend tests as a ref., strength predictions for the ball-on-ring and ring-on-ring biaxial tests were made, showing large differences in the predictions for the different fracture criteria. The best fitting models for the 2 aluminas cannot be interchanged, thus showing a marked difference in their shear stress sensitivity. Anal. shows that, in general, a combination of tests with a varying degree of stress multiaxiality is required to det. the best applicable mixed-mode fracture criterion. [on SciFinder (R)]
AB - Strength data obtained from uniaxial and biaxial bend tests on 2 alumina ceramics were analyzed by a weakest-link model with different mixed-mode fracture criteria and crack shapes. Taking the data from 3- and 4-point bend tests as a ref., strength predictions for the ball-on-ring and ring-on-ring biaxial tests were made, showing large differences in the predictions for the different fracture criteria. The best fitting models for the 2 aluminas cannot be interchanged, thus showing a marked difference in their shear stress sensitivity. Anal. shows that, in general, a combination of tests with a varying degree of stress multiaxiality is required to det. the best applicable mixed-mode fracture criterion. [on SciFinder (R)]
U2 - 10.1016/0955-2219(92)90125-W
DO - 10.1016/0955-2219(92)90125-W
M3 - Article
VL - 10
SP - 109
EP - 114
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
SN - 0955-2219
IS - 2
ER -