Thermal failure of refractories with the use of the acoustic-emission method
Tóm tắt
Calculation of the temperature fields and stressed and strained conditions of samples in thermal loading made it possible to establish three characteristic zones of failure and the moments of the stresses (deformations) reaching the maximum values in these zones. Visual and instrument observations of the occurrence and development of cracks confirmed the established failure mechanism. The dynamics of thermal failure of refractories recorded by the acoustic-emission method agrees with the results of calculation of the temperature fields and the stressed and deformed condition and with the data of microstructural analysis. The outlook for continuation of investigations on evaluation of the crack resistance of refractories of various compositions by the acoustic-emission method was shown.
Tài liệu tham khảo
T. Y. Coppack, Bull. Soc. Franc. Ceram., No. 129, 36–46 (1980).
A. T. Kuznetsov, A. A. Kortel', A. L. Durmashkin, et al., Ogneupory, No. 2, 46–51 (1983).
I. I. Nemets, V. B. Zlatkovskaya, and G. A. Fokin, Ogneupory, No. 3, 47–50 (1982).
R. Uchimura and M. Kumasai, Bull. Jpn. Inst. Met.,20, No. 6, 525–527 (1981).
G. Libovits (ed.), Fracture (A Collection) [Russian translation], Vol. 1, Mir, Moscow (1973).
O. M. Alifanov and V. V. Mikhailov, Inzh.-Fiz. Zh.,35, No. 6, 1123–1129 (1978).
G. A. Gogotsi, The Inelasticity of Ceramics and Refractories: A Preprint [in Russian], Inst. Probl. Prochn. Akad. Nauk UkrSSR, Kiev (1982).
F. Norton, Refractories [in Russian], Otd. Nauch. Tekh. Inf., Moscow (1938).
I. D. Zborovskii, G. M. Kushnirskii, Ya. A. Landa, et al., Probl. Prochn., No. 4, 69–72 (1976).