Study of the variability of the number of pores per unit length of the weld

Abstract

The variability of the number of pores that appeared under the influence of additional introduction of the pore-forming material into the welding zone was analyzed. The Pearson test showed that Poisson's law adequately describes the variability of the number of pores in a unit area of the weld. At the same time, the experimental distribution is very close to the theoretical one calculated according to Poisson's law. The mathematical expectation of the number of pores in a unit area of the weld unambiguously determines the distribution of the number of pores. The form of the distribution depends significantly on the value of the mathematical expectation.