Fragment spectra of cylinders fractured by an impact of a tube from inside

Results of experimental studies on the fracture of steel cylinders by an impact of a tube from inside are presented. The fragment spectrum formed consists of two parts: fragments of the spalled layer and larger fragments of the inner layer. Fragments of the spalled layer are significantly longer. The total number of fragments is 450–600. This is commensurable with the number of fragments obtained when the inside volume of the cylinder is filled by an explosive charge. The mass of the largest fragment is 5% of the mass of the cylinder.