Radial And Concentric Fractures
Radial And Concentric Fractures. When a projectile such as a bullet or. Web in a concentric glass fracture, the fracture lines occur in circles that share a center (the center is found at the point of impact).
Web (b) concentric cracks occur afterward, starting on the same side as the force. The concentric glass fractures are the secondary fracture and occur after radial fracture. Web examination of glass fractures caused by the impact of a blunt instrument or object will reveal a pattern of radial and concentric fractures.