Additional Effect of Gases on Strain Gauges at Barrel Muzzle

The paper deals with the analysis and measurement of stress and strain of the barrel when the projectile goes through the muzzle. A muzzle of the barrel is stressed in a special way. This fact can influence the accuracy of firearm performance. The paper describes the issues of measurement; precisely an adverse influence impacting the strain gauges which takes place in the nearness of firearm muzzle of the experimental barrel, calibre 30 mm. The development of the experiment is presented. The amount of deformation, as well as the value of pressure at the muzzle will be checked by means of the quasi-static dynamics conditions that are described in this paper.