Ceramics-Silikáty 60, (1) 48 - 57 (2016)

The present investigation provides a detailed relationship between the powder composition and reliability of random ceramic beds. This evaluation is important due to standing in the liquid-gas contactors as well as predicting lifetime. It is still unclear whether the normal distribution is the most suitable function for estimation of failure. By developing the application of ceramic beds in the chemical plants, a special attention has been paid in screening strength distributions. To achieve this goal, an experimental-theoretical study was presented on compressive strength distribution. The powder compositions were prepared according to the statistical response surface methodology and then were formed by a single screw extrusion as Raschig rings. The compressive strength of specimens was measured to evaluate the strength data sets by normal and Weibull distributions. The results were analyzed by the Akaike information criterion and the Anderson-Darling test. The accuracy of distributions in prediction fracture was discussed.