Probability Distribution of Notch Strength of Ceramics (I) Basic Expressions

Further analysis on the notch strength of alumina ceramics was carried out. Analysis result shows that test results of notch strength and fracture strength under bending loading condition,i.e. flexural strength follow the normal distribution, the log-normal distribution and two-parameter Weibull distribution as well. Then, on the basis of the expression for notch strength of brittle material and the fundamental principle of probability theory, correlations between the statistical characteristic parameters of notch strength and those of flexural strength of ceramics were obtained and checked by the test results.