Application of statistical methods of fracture mechanics taking into account the reproducibility of the results of determination of the fracture resistance characteristics of materials

1. The reproducibility of the results of determining the cracking resistance of the materials plays an important role in calculating the permissible crack length or verifying the reliability of structures. 2. The distribution of the cracking resistance characteristics of the material can be conveniently described by Weibull's distribution, whose lower limit is also the main parameter of the calculations. 3. According to the results obtained up to the present day, the lower limit of Weibull's distribution cannot be determined reliably from the mean value of rms deviation.