Statistical methods of determining the thermal-shock resistance of refractories

Conclusions A statistical analysis of the test results for the thermal-shock resistance of a large batch of specimens of zirconium dioxide established that there is satisfactory correspondence between the experimental data and the exponential distribution of Weibull. The appreciable spread in the thermal-shock resistance criteria R for brittle refractory materials should be considered as regular, and therefore to obtain reliable calculation characteristics for thermal-shock resistance it is necessary to treat the test results statistically.It is proposed that one of the causes of variation in the thermal-shock resistance criterion R is the slight (unavoidable even within the limits of a single batch of specimens) change in the density of the material.Translated from Ogneupory, No. 2, pp. 53–56, February, 1971.