Si-Ti-C-O繊維結合セラミックスの高温曲げクリープ
1999 年 48 巻 8 号 p. 935-942
詳細
1999 年 48 巻 8 号 p. 935-942
The Si-Ti-C-O fiber bonded ceramic material was creep-tested under three-point bend loading at 1400°C, where deflection was measured at the loading point by means of the laser beam type extensometer. Furthermore, creep process was analyzed by using the convenient analytical method and F.E.M. The creep constitutive equation was successfully determined through an inverse analysis using F.E.M; parameters included in the equation were settled so that the calculated deflection-test time curve might coincide with the measured one. The calculation exhibited that compressive creep hardly occurred in this material. The convenient analytical method was useful for setting the initial values of the parameters in the FEM calculation. In addition, creep fracture patterns were revealed through SEM observations.
