Special features of the shock tests of thin-walled tubes by the internal pressure

Methodical difficulties attributed to shock tests of thin-walled tubes by internal pressure are considered. Using Zr - 1 % Nb tubes it was demonstrated that correct determination of the mechanical properties is possible at a working length of the tube 14 - 30 mm. Edge disturbance appeared a predominant effect at smaller length values, whereas at larger length values the quasistatic character of the strain state of the tube filler is disturbed which results in nonuniformity of the internal pressure and thus in variation of the deformation along the sample length