Rifles are introduced in a barrel for having a stable trajectory due to the rotary inertia. The spiral concavo-convex shape is easy to concentrate of stress. Also, the crack is difficult to inspect due to its complicated structure. A non-destructive t...
Rifles are introduced in a barrel for having a stable trajectory due to the rotary inertia. The spiral concavo-convex shape is easy to concentrate of stress. Also, the crack is difficult to inspect due to its complicated structure. A non-destructive testing method is proposed to inspect cracks on the rifle in this paper. Each tip of sensors is closely contacted with the edge of concavo-convex rifle. Not only the wear and tear, but also a crack with the length of 4mm, depth of 0.5mm, width of 0.1mm beside the edge was detected.