V. Tikare et Sr. Choi, COMBINED MODE-I MODE-II FRACTURE OF 12-MOL-PERCENT-CERIA-DOPED TETRAGONAL ZIRCONIA POLYCRYSTALLINE CERAMIC, Journal of the American Ceramic Society, 80(6), 1997, pp. 1624-1626
The mode I, mode II, and combined mode I-mode II fracture behavior of
ceria-doped tetragonal zirconia polycrystalline (Ce-TZP) ceramic was s
tudied, The single-edge-precracked-beam (SEPB) samples were fractured
using the asymmetric four-point-bend geometry. The ratio of mode I to
mode II loading was varied by varying the degree of asymmetry in the f
our-point-bend geometry. The minimum strain energy density theory best
described the mixed-mode fracture behavior of Ce-TZP with the mode I
fracture toughness, K-IC = 8.2 +/- 0.6 MPa . m(1/2), and the mode II f
racture toughness, K-IIC = 8.6 +/- 1.3 MPa . m(1/2).